diff --git a/docs/accounting/AccountingApi.md b/docs/accounting/AccountingApi.md
index f8b18ae3..0b14036b 100644
--- a/docs/accounting/AccountingApi.md
+++ b/docs/accounting/AccountingApi.md
@@ -1264,7 +1264,7 @@ api_instance = xero_client.<api_set>
 
 
 xero_tenant_id = 'YOUR_XERO_TENANT_ID' # String | Xero identifier for Tenant
-contacts = { "Id": "e997d6d7-6dad-4458-beb8-d9c1bf7f2edf", "Status": "OK", "ProviderName": "Xero API Partner", "DateTimeUTC": "/Date(1551399321121)/", "Contacts": [ { "ContactID": "3ff6d40c-af9a-40a3-89ce-3c1556a25591", "ContactStatus": "ACTIVE", "Name": "Foo9987", "EmailAddress": "sid32476@blah.com", "BankAccountDetails": "", "Addresses": [ { "AddressType": "STREET", "City": "", "Region": "", "PostalCode": "", "Country": "" }, { "AddressType": "POBOX", "City": "", "Region": "", "PostalCode": "", "Country": "" } ], "Phones": [ { "PhoneType": "DEFAULT", "PhoneNumber": "", "PhoneAreaCode": "", "PhoneCountryCode": "" }, { "PhoneType": "DDI", "PhoneNumber": "", "PhoneAreaCode": "", "PhoneCountryCode": "" }, { "PhoneType": "FAX", "PhoneNumber": "", "PhoneAreaCode": "", "PhoneCountryCode": "" }, { "PhoneType": "MOBILE", "PhoneNumber": "555-1212", "PhoneAreaCode": "415", "PhoneCountryCode": "" } ], "UpdatedDateUTC": "/Date(1551399321043+0000)/", "ContactGroups": [], "IsSupplier": false, "IsCustomer": false, "SalesTrackingCategories": [], "PurchasesTrackingCategories": [], "PaymentTerms": { "Bills": { "Day": 15, "Type": "OFCURRENTMONTH" }, "Sales": { "Day": 10, "Type": "DAYSAFTERBILLMONTH" } }, "ContactPersons": [], "HasValidationErrors": false } ] } # Contacts | Contacts with an array of Contact objects to create in body of request
+contacts = { "Contacts": [ { "ContactID": "3ff6d40c-af9a-40a3-89ce-3c1556a25591", "ContactStatus": "ACTIVE", "Name": "Foo9987", "EmailAddress": "sid32476@blah.com", "BankAccountDetails": "", "Addresses": [ { "AddressType": "STREET", "City": "", "Region": "", "PostalCode": "", "Country": "" }, { "AddressType": "POBOX", "City": "", "Region": "", "PostalCode": "", "Country": "" } ], "Phones": [ { "PhoneType": "DEFAULT", "PhoneNumber": "", "PhoneAreaCode": "", "PhoneCountryCode": "" }, { "PhoneType": "DDI", "PhoneNumber": "", "PhoneAreaCode": "", "PhoneCountryCode": "" }, { "PhoneType": "FAX", "PhoneNumber": "", "PhoneAreaCode": "", "PhoneCountryCode": "" }, { "PhoneType": "MOBILE", "PhoneNumber": "555-1212", "PhoneAreaCode": "415", "PhoneCountryCode": "" } ], "UpdatedDateUTC": "/Date(1551399321043+0000)/", "ContactGroups": [], "IsSupplier": false, "IsCustomer": false, "SalesTrackingCategories": [], "PurchasesTrackingCategories": [], "PaymentTerms": { "Bills": { "Day": 15, "Type": "OFCURRENTMONTH" }, "Sales": { "Day": 10, "Type": "DAYSAFTERBILLMONTH" } }, "ContactPersons": [] } ] } # Contacts | Contacts with an array of Contact objects to create in body of request
 opts = {
   summarize_errors: false # Boolean | If false return 200 OK and mix of successfully created objects and any with validation errors
 }
diff --git a/docs/accounting/index.html b/docs/accounting/index.html
index bdbae65a..642544f5 100644
--- a/docs/accounting/index.html
+++ b/docs/accounting/index.html
@@ -6008,7 +6008,7 @@
           <nav id="scrollingNav">
             <ul class="sidenav nav nav-list">
               <li class="nav-header" data-group="Accounting"><strong>SDK: </strong><span id='sdk-name'></span></li>
-              <li class="nav-header" data-group="Accounting"><strong>VSN: </strong>3.7.1</li>
+              <li class="nav-header" data-group="Accounting"><strong>VSN: </strong>3.8.0</li>
               <li class="nav-header" data-group="Accounting"><a href="#api-Accounting">Methods</a></li>
               <li data-group="Accounting" data-name="createAccount" class="">
                 <a href="#api-Accounting-createAccount">createAccount</a>
@@ -9224,7 +9224,7 @@ <h2>Parameters</h2>
       "schema" : {
         "$ref" : "#/components/schemas/Contacts"
       },
-      "example" : "{ \"Id\": \"e997d6d7-6dad-4458-beb8-d9c1bf7f2edf\", \"Status\": \"OK\", \"ProviderName\": \"Xero API Partner\", \"DateTimeUTC\": \"/Date(1551399321121)/\", \"Contacts\": [ { \"ContactID\": \"3ff6d40c-af9a-40a3-89ce-3c1556a25591\", \"ContactStatus\": \"ACTIVE\", \"Name\": \"Foo9987\", \"EmailAddress\": \"sid32476@blah.com\", \"BankAccountDetails\": \"\", \"Addresses\": [ { \"AddressType\": \"STREET\", \"City\": \"\", \"Region\": \"\", \"PostalCode\": \"\", \"Country\": \"\" }, { \"AddressType\": \"POBOX\", \"City\": \"\", \"Region\": \"\", \"PostalCode\": \"\", \"Country\": \"\" } ], \"Phones\": [ { \"PhoneType\": \"DEFAULT\", \"PhoneNumber\": \"\", \"PhoneAreaCode\": \"\", \"PhoneCountryCode\": \"\" }, { \"PhoneType\": \"DDI\", \"PhoneNumber\": \"\", \"PhoneAreaCode\": \"\", \"PhoneCountryCode\": \"\" }, { \"PhoneType\": \"FAX\", \"PhoneNumber\": \"\", \"PhoneAreaCode\": \"\", \"PhoneCountryCode\": \"\" }, { \"PhoneType\": \"MOBILE\", \"PhoneNumber\": \"555-1212\", \"PhoneAreaCode\": \"415\", \"PhoneCountryCode\": \"\" } ], \"UpdatedDateUTC\": \"/Date(1551399321043+0000)/\", \"ContactGroups\": [], \"IsSupplier\": false, \"IsCustomer\": false, \"SalesTrackingCategories\": [], \"PurchasesTrackingCategories\": [], \"PaymentTerms\": { \"Bills\": { \"Day\": 15, \"Type\": \"OFCURRENTMONTH\" }, \"Sales\": { \"Day\": 10, \"Type\": \"DAYSAFTERBILLMONTH\" } }, \"ContactPersons\": [], \"HasValidationErrors\": false } ] }"
+      "example" : "{ \"Contacts\": [ { \"ContactID\": \"3ff6d40c-af9a-40a3-89ce-3c1556a25591\", \"ContactStatus\": \"ACTIVE\", \"Name\": \"Foo9987\", \"EmailAddress\": \"sid32476@blah.com\", \"BankAccountDetails\": \"\", \"Addresses\": [ { \"AddressType\": \"STREET\", \"City\": \"\", \"Region\": \"\", \"PostalCode\": \"\", \"Country\": \"\" }, { \"AddressType\": \"POBOX\", \"City\": \"\", \"Region\": \"\", \"PostalCode\": \"\", \"Country\": \"\" } ], \"Phones\": [ { \"PhoneType\": \"DEFAULT\", \"PhoneNumber\": \"\", \"PhoneAreaCode\": \"\", \"PhoneCountryCode\": \"\" }, { \"PhoneType\": \"DDI\", \"PhoneNumber\": \"\", \"PhoneAreaCode\": \"\", \"PhoneCountryCode\": \"\" }, { \"PhoneType\": \"FAX\", \"PhoneNumber\": \"\", \"PhoneAreaCode\": \"\", \"PhoneCountryCode\": \"\" }, { \"PhoneType\": \"MOBILE\", \"PhoneNumber\": \"555-1212\", \"PhoneAreaCode\": \"415\", \"PhoneCountryCode\": \"\" } ], \"UpdatedDateUTC\": \"/Date(1551399321043+0000)/\", \"ContactGroups\": [], \"IsSupplier\": false, \"IsCustomer\": false, \"SalesTrackingCategories\": [], \"PurchasesTrackingCategories\": [], \"PaymentTerms\": { \"Bills\": { \"Day\": 15, \"Type\": \"OFCURRENTMONTH\" }, \"Sales\": { \"Day\": 10, \"Type\": \"DAYSAFTERBILLMONTH\" } }, \"ContactPersons\": [] } ] }"
     }
   },
   "required" : true
diff --git a/docs/app_store/Product.md b/docs/app_store/Product.md
index ee649b85..e52a84b8 100644
--- a/docs/app_store/Product.md
+++ b/docs/app_store/Product.md
@@ -6,8 +6,9 @@ Name | Type | Description | Notes
 ------------ | ------------- | ------------- | -------------
 **id** | **String** | The unique identifier for the product | [optional] 
 **name** | **String** | The name of the product | [optional] 
-**type** | **String** | The pricing model of the product: * FIXED: Customers are charged a fixed amount for each billing period * PER_SEAT: Customers are charged based on the number of units they purchase  | [optional] 
 **seat_unit** | **String** | The unit of the per seat product. e.g. \&quot;user\&quot;, \&quot;organisation\&quot;, \&quot;SMS\&quot;, etc | [optional] 
+**type** | **String** | The pricing model of the product: * FIXED: Customers are charged a fixed amount for each billing period * PER_SEAT: Customers are charged based on the number of units they purchase * METERED: Customers are charged per use of this product  | [optional] 
+**usage_unit** | **String** | The unit of the usage product. e.g. \&quot;user\&quot;, \&quot;minutes\&quot;, \&quot;SMS\&quot;, etc | [optional] 
 
 ## Code Sample
 
@@ -16,8 +17,9 @@ require 'XeroRuby::AppStore'
 
 instance = XeroRuby::AppStore::Product.new(id: null,
                                  name: null,
+                                 seat_unit: null,
                                  type: null,
-                                 seat_unit: null)
+                                 usage_unit: null)
 ```
 
 
diff --git a/docs/app_store/SubscriptionItem.md b/docs/app_store/SubscriptionItem.md
index 1e4f29ac..4485c951 100644
--- a/docs/app_store/SubscriptionItem.md
+++ b/docs/app_store/SubscriptionItem.md
@@ -8,6 +8,7 @@ Name | Type | Description | Notes
 **id** | **String** | The unique identifier of the subscription item. | 
 **price** | [**Price**](Price.md) |  | 
 **product** | [**Product**](Product.md) |  | 
+**quantity** | **Integer** | The quantity of the item. For a fixed product, it is 1. For a per-seat product, it is a positive integer. For metered products, it is always null. | [optional] 
 **start_date** | **DateTime** | Date the subscription started, or will start. Note: this could be in the future for downgrades or reduced number of seats that haven&#39;t taken effect yet.  | 
 **status** | **String** | Status of the subscription item. Available statuses are ACTIVE, CANCELED, and PENDING_ACTIVATION.  | 
 **test_mode** | **Boolean** | If the subscription is a test subscription | [optional] 
@@ -21,6 +22,7 @@ instance = XeroRuby::AppStore::SubscriptionItem.new(end_date: null,
                                  id: null,
                                  price: null,
                                  product: null,
+                                 quantity: null,
                                  start_date: null,
                                  status: null,
                                  test_mode: null)
diff --git a/docs/app_store/index.html b/docs/app_store/index.html
index dc022558..342f48ab 100644
--- a/docs/app_store/index.html
+++ b/docs/app_store/index.html
@@ -951,14 +951,18 @@
       "type" : "string",
       "description" : "The name of the product"
     },
+    "seatUnit" : {
+      "type" : "string",
+      "description" : "The unit of the per seat product. e.g. \"user\", \"organisation\", \"SMS\", etc"
+    },
     "type" : {
       "type" : "string",
-      "description" : "The pricing model of the product:\n* FIXED: Customers are charged a fixed amount for each billing period\n* PER_SEAT: Customers are charged based on the number of units they purchase\n",
-      "enum" : [ "FIXED", "PER_SEAT" ]
+      "description" : "The pricing model of the product:\n* FIXED: Customers are charged a fixed amount for each billing period\n* PER_SEAT: Customers are charged based on the number of units they purchase\n* METERED: Customers are charged per use of this product\n",
+      "enum" : [ "FIXED", "PER_SEAT", "METERED" ]
     },
-    "seatUnit" : {
+    "usageUnit" : {
       "type" : "string",
-      "description" : "The unit of the per seat product. e.g. \"user\", \"organisation\", \"SMS\", etc"
+      "description" : "The unit of the usage product. e.g. \"user\", \"minutes\", \"SMS\", etc"
     }
   },
   "description" : ""
@@ -1033,6 +1037,10 @@
     "product" : {
       "$ref" : "#/components/schemas/Product"
     },
+    "quantity" : {
+      "type" : "integer",
+      "description" : "The quantity of the item. For a fixed product, it is 1. For a per-seat product, it is a positive integer. For metered products, it is always null."
+    },
     "startDate" : {
       "type" : "string",
       "description" : "Date the subscription started, or will start. Note: this could be in\nthe future for downgrades or reduced number of seats that haven't taken effect yet.\n",
@@ -1133,7 +1141,7 @@
           <nav id="scrollingNav">
             <ul class="sidenav nav nav-list">
               <li class="nav-header" data-group="AppStore"><strong>SDK: </strong><span id='sdk-name'></span></li>
-              <li class="nav-header" data-group="AppStore"><strong>VSN: </strong>3.7.1</li>
+              <li class="nav-header" data-group="AppStore"><strong>VSN: </strong>3.8.0</li>
               <li class="nav-header" data-group="AppStore"><a href="#api-AppStore">Methods</a></li>
               <li data-group="AppStore" data-name="getSubscription" class="">
                 <a href="#api-AppStore-getSubscription">getSubscription</a>
diff --git a/docs/assets/index.html b/docs/assets/index.html
index 44eab175..fd9b4047 100644
--- a/docs/assets/index.html
+++ b/docs/assets/index.html
@@ -1009,7 +1009,8 @@
       "example" : 33
     }
   },
-  "description" : ""
+  "description" : "",
+  "x-snake" : "asset_type"
 };
       defs["Assets"] = {
   "title" : "",
@@ -1391,7 +1392,7 @@
           <nav id="scrollingNav">
             <ul class="sidenav nav nav-list">
               <li class="nav-header" data-group="Asset"><strong>SDK: </strong><span id='sdk-name'></span></li>
-              <li class="nav-header" data-group="Asset"><strong>VSN: </strong>3.7.1</li>
+              <li class="nav-header" data-group="Asset"><strong>VSN: </strong>3.8.0</li>
               <li class="nav-header" data-group="Asset"><a href="#api-Asset">Methods</a></li>
               <li data-group="Asset" data-name="createAsset" class="">
                 <a href="#api-Asset-createAsset">createAsset</a>
@@ -1454,7 +1455,7 @@ <h3>Usage and SDK Samples</h3>
                     <div class="tab-pane" id="examples-Asset-createAsset-0-ruby">
                       <pre class="prettyprint"><code class="language-ruby">xero_client.set_token_set(user.token_set)
 
-xeroTenantId = 'YOUR_XERO_TENANT_ID'
+xero_tenant_id = 'YOUR_XERO_TENANT_ID'
 
 asset = { 
   asset_name: "Other Computer",
@@ -1463,7 +1464,7 @@ <h3>Usage and SDK Samples</h3>
 }  
 
 begin
-  response = xero_client.accounting_api.create_asset(xeroTenantId, asset)
+  response = xero_client.accounting_api.create_asset(xero_tenant_id, asset)
   return response
 rescue XeroRuby::ApiError => e
   puts "Exception when calling create_asset: #{e}"
@@ -1576,25 +1577,25 @@ <h3>Usage and SDK Samples</h3>
                     <div class="tab-pane" id="examples-Asset-createAssetType-0-ruby">
                       <pre class="prettyprint"><code class="language-ruby">xero_client.set_token_set(user.token_set)
 
-xeroTenantId = 'YOUR_XERO_TENANT_ID'
+xero_tenant_id = 'YOUR_XERO_TENANT_ID'
 
-bookDepreciationSetting = { 
+book_depreciation_setting = { 
   depreciation_method: "DiminishingValue100",
   averaging_method: "ActualDays",
   deprecitation_rate: 40,
   depreciation_calculation_method: "None"
 }  
 
-assetType = { 
+asset_type = { 
   asset_type_name: "Computer Equipment",
   fixed_asset_account_id: "00000000-0000-0000-0000-000000000000",
   depreciation_expense_account_id: "00000000-0000-0000-0000-000000000000",
   accumulated_depreciation_account_id: "00000000-0000-0000-0000-000000000000",
-  bookDepreciationSetting:  book_depreciation_setting
+  book_depreciation_setting:  book_depreciation_setting
 }  
 
 begin
-  response = xero_client.accounting_api.create_asset_type(xeroTenantId, assetType)
+  response = xero_client.accounting_api.create_asset_type(xero_tenant_id, assetType)
   return response
 rescue XeroRuby::ApiError => e
   puts "Exception when calling create_asset_type: #{e}"
@@ -1704,11 +1705,11 @@ <h3>Usage and SDK Samples</h3>
                     <div class="tab-pane" id="examples-Asset-getAssetById-0-ruby">
                       <pre class="prettyprint"><code class="language-ruby">xero_client.set_token_set(user.token_set)
 
-xeroTenantId = 'YOUR_XERO_TENANT_ID'
+xero_tenant_id = 'YOUR_XERO_TENANT_ID'
 id = '00000000-0000-0000-0000-000000000000'
 
 begin
-  response = xero_client.accounting_api.get_asset_by_id(xeroTenantId, id)
+  response = xero_client.accounting_api.get_asset_by_id(xero_tenant_id, id)
   return response
 rescue XeroRuby::ApiError => e
   puts "Exception when calling get_asset_by_id: #{e}"
@@ -1822,10 +1823,10 @@ <h3>Usage and SDK Samples</h3>
                     <div class="tab-pane" id="examples-Asset-getAssetSettings-0-ruby">
                       <pre class="prettyprint"><code class="language-ruby">xero_client.set_token_set(user.token_set)
 
-xeroTenantId = 'YOUR_XERO_TENANT_ID'
+xero_tenant_id = 'YOUR_XERO_TENANT_ID'
 
 begin
-  response = xero_client.accounting_api.get_asset_settings(xeroTenantId)
+  response = xero_client.accounting_api.get_asset_settings(xero_tenant_id)
   return response
 rescue XeroRuby::ApiError => e
   puts "Exception when calling get_asset_settings: #{e}"
@@ -1906,10 +1907,10 @@ <h3>Usage and SDK Samples</h3>
                     <div class="tab-pane" id="examples-Asset-getAssetTypes-0-ruby">
                       <pre class="prettyprint"><code class="language-ruby">xero_client.set_token_set(user.token_set)
 
-xeroTenantId = 'YOUR_XERO_TENANT_ID'
+xero_tenant_id = 'YOUR_XERO_TENANT_ID'
 
 begin
-  response = xero_client.accounting_api.get_asset_types(xeroTenantId)
+  response = xero_client.accounting_api.get_asset_types(xero_tenant_id)
   return response
 rescue XeroRuby::ApiError => e
   puts "Exception when calling get_asset_types: #{e}"
@@ -1990,16 +1991,16 @@ <h3>Usage and SDK Samples</h3>
                     <div class="tab-pane" id="examples-Asset-getAssets-0-ruby">
                       <pre class="prettyprint"><code class="language-ruby">xero_client.set_token_set(user.token_set)
 
-xeroTenantId = 'YOUR_XERO_TENANT_ID'
+xero_tenant_id = 'YOUR_XERO_TENANT_ID'
 status = 
 page = 1
-pageSize = 5
-orderBy = 'AssetName'
-sortDirection = 'ASC'
-filterBy = 'Company Car'
+page_size = 5
+order_by = 'AssetName'
+sort_direction = 'ASC'
+filter_by = 'Company Car'
 
 begin
-  response = xero_client.accounting_api.get_assets(xeroTenantId, status, page, pageSize, orderBy, sortDirection, filterBy)
+  response = xero_client.accounting_api.get_assets(xero_tenant_id, status, page, page_size, order_by, sort_direction, filter_by)
   return response
 rescue XeroRuby::ApiError => e
   puts "Exception when calling get_assets: #{e}"
diff --git a/docs/files/index.html b/docs/files/index.html
index 1d41cb39..55b14b1d 100644
--- a/docs/files/index.html
+++ b/docs/files/index.html
@@ -1155,7 +1155,7 @@
           <nav id="scrollingNav">
             <ul class="sidenav nav nav-list">
               <li class="nav-header" data-group="Files"><strong>SDK: </strong><span id='sdk-name'></span></li>
-              <li class="nav-header" data-group="Files"><strong>VSN: </strong>3.7.1</li>
+              <li class="nav-header" data-group="Files"><strong>VSN: </strong>3.8.0</li>
               <li class="nav-header" data-group="Files"><a href="#api-Files">Methods</a></li>
               <li data-group="Files" data-name="createFileAssociation" class="">
                 <a href="#api-Files-createFileAssociation">createFileAssociation</a>
@@ -1251,11 +1251,11 @@ <h3>Usage and SDK Samples</h3>
                     <div class="tab-pane" id="examples-Files-createFileAssociation-0-ruby">
                       <pre class="prettyprint"><code class="language-ruby">xero_client.set_token_set(user.token_set)
 
-xeroTenantId = 'YOUR_XERO_TENANT_ID'
-fileId = '4ff1e5cc-9835-40d5-bb18-09fdb118db9c'
+xero_tenant_id = 'YOUR_XERO_TENANT_ID'
+file_id = '4ff1e5cc-9835-40d5-bb18-09fdb118db9c'
 
 begin
-  response = xero_client.accounting_api.create_file_association(xeroTenantId, fileId, association)
+  response = xero_client.accounting_api.create_file_association(xero_tenant_id, file_id, association)
   return response
 rescue XeroRuby::ApiError => e
   puts "Exception when calling create_file_association: #{e}"
@@ -1396,10 +1396,10 @@ <h3>Usage and SDK Samples</h3>
                     <div class="tab-pane" id="examples-Files-createFolder-0-ruby">
                       <pre class="prettyprint"><code class="language-ruby">xero_client.set_token_set(user.token_set)
 
-xeroTenantId = 'YOUR_XERO_TENANT_ID'
+xero_tenant_id = 'YOUR_XERO_TENANT_ID'
 
 begin
-  response = xero_client.accounting_api.create_folder(xeroTenantId, folder)
+  response = xero_client.accounting_api.create_folder(xero_tenant_id, folder)
   return response
 rescue XeroRuby::ApiError => e
   puts "Exception when calling create_folder: #{e}"
@@ -1507,11 +1507,11 @@ <h3>Usage and SDK Samples</h3>
                     <div class="tab-pane" id="examples-Files-deleteFile-0-ruby">
                       <pre class="prettyprint"><code class="language-ruby">xero_client.set_token_set(user.token_set)
 
-xeroTenantId = 'YOUR_XERO_TENANT_ID'
-fileId = '4ff1e5cc-9835-40d5-bb18-09fdb118db9c'
+xero_tenant_id = 'YOUR_XERO_TENANT_ID'
+file_id = '4ff1e5cc-9835-40d5-bb18-09fdb118db9c'
 
 begin
-  response = xero_client.accounting_api.delete_file(xeroTenantId, fileId)
+  response = xero_client.accounting_api.delete_file(xero_tenant_id, file_id)
   return response
 rescue XeroRuby::ApiError => e
   puts "Exception when calling delete_file: #{e}"
@@ -1620,12 +1620,12 @@ <h3>Usage and SDK Samples</h3>
                     <div class="tab-pane" id="examples-Files-deleteFileAssociation-0-ruby">
                       <pre class="prettyprint"><code class="language-ruby">xero_client.set_token_set(user.token_set)
 
-xeroTenantId = 'YOUR_XERO_TENANT_ID'
-fileId = '4ff1e5cc-9835-40d5-bb18-09fdb118db9c'
-objectId = '4ff1e5cc-9835-40d5-bb18-09fdb118db9c'
+xero_tenant_id = 'YOUR_XERO_TENANT_ID'
+file_id = '4ff1e5cc-9835-40d5-bb18-09fdb118db9c'
+object_id = '4ff1e5cc-9835-40d5-bb18-09fdb118db9c'
 
 begin
-  response = xero_client.accounting_api.delete_file_association(xeroTenantId, fileId, objectId)
+  response = xero_client.accounting_api.delete_file_association(xero_tenant_id, file_id, object_id)
   return response
 rescue XeroRuby::ApiError => e
   puts "Exception when calling delete_file_association: #{e}"
@@ -1760,11 +1760,11 @@ <h3>Usage and SDK Samples</h3>
                     <div class="tab-pane" id="examples-Files-deleteFolder-0-ruby">
                       <pre class="prettyprint"><code class="language-ruby">xero_client.set_token_set(user.token_set)
 
-xeroTenantId = 'YOUR_XERO_TENANT_ID'
-folderId = '4ff1e5cc-9835-40d5-bb18-09fdb118db9c'
+xero_tenant_id = 'YOUR_XERO_TENANT_ID'
+folder_id = '4ff1e5cc-9835-40d5-bb18-09fdb118db9c'
 
 begin
-  response = xero_client.accounting_api.delete_folder(xeroTenantId, folderId)
+  response = xero_client.accounting_api.delete_folder(xero_tenant_id, folder_id)
   return response
 rescue XeroRuby::ApiError => e
   puts "Exception when calling delete_folder: #{e}"
@@ -1873,11 +1873,11 @@ <h3>Usage and SDK Samples</h3>
                     <div class="tab-pane" id="examples-Files-getAssociationsByObject-0-ruby">
                       <pre class="prettyprint"><code class="language-ruby">xero_client.set_token_set(user.token_set)
 
-xeroTenantId = 'YOUR_XERO_TENANT_ID'
-objectId = '4ff1e5cc-9835-40d5-bb18-09fdb118db9c'
+xero_tenant_id = 'YOUR_XERO_TENANT_ID'
+object_id = '4ff1e5cc-9835-40d5-bb18-09fdb118db9c'
 
 begin
-  response = xero_client.accounting_api.get_associations_by_object(xeroTenantId, objectId)
+  response = xero_client.accounting_api.get_associations_by_object(xero_tenant_id, object_id)
   return response
 rescue XeroRuby::ApiError => e
   puts "Exception when calling get_associations_by_object: #{e}"
@@ -1991,11 +1991,11 @@ <h3>Usage and SDK Samples</h3>
                     <div class="tab-pane" id="examples-Files-getFile-0-ruby">
                       <pre class="prettyprint"><code class="language-ruby">xero_client.set_token_set(user.token_set)
 
-xeroTenantId = 'YOUR_XERO_TENANT_ID'
-fileId = '4ff1e5cc-9835-40d5-bb18-09fdb118db9c'
+xero_tenant_id = 'YOUR_XERO_TENANT_ID'
+file_id = '4ff1e5cc-9835-40d5-bb18-09fdb118db9c'
 
 begin
-  response = xero_client.accounting_api.get_file(xeroTenantId, fileId)
+  response = xero_client.accounting_api.get_file(xero_tenant_id, file_id)
   return response
 rescue XeroRuby::ApiError => e
   puts "Exception when calling get_file: #{e}"
@@ -2109,11 +2109,11 @@ <h3>Usage and SDK Samples</h3>
                     <div class="tab-pane" id="examples-Files-getFileAssociations-0-ruby">
                       <pre class="prettyprint"><code class="language-ruby">xero_client.set_token_set(user.token_set)
 
-xeroTenantId = 'YOUR_XERO_TENANT_ID'
-fileId = '4ff1e5cc-9835-40d5-bb18-09fdb118db9c'
+xero_tenant_id = 'YOUR_XERO_TENANT_ID'
+file_id = '4ff1e5cc-9835-40d5-bb18-09fdb118db9c'
 
 begin
-  response = xero_client.accounting_api.get_file_associations(xeroTenantId, fileId)
+  response = xero_client.accounting_api.get_file_associations(xero_tenant_id, file_id)
   return response
 rescue XeroRuby::ApiError => e
   puts "Exception when calling get_file_associations: #{e}"
@@ -2227,11 +2227,11 @@ <h3>Usage and SDK Samples</h3>
                     <div class="tab-pane" id="examples-Files-getFileContent-0-ruby">
                       <pre class="prettyprint"><code class="language-ruby">xero_client.set_token_set(user.token_set)
 
-xeroTenantId = 'YOUR_XERO_TENANT_ID'
-fileId = '4ff1e5cc-9835-40d5-bb18-09fdb118db9c'
+xero_tenant_id = 'YOUR_XERO_TENANT_ID'
+file_id = '4ff1e5cc-9835-40d5-bb18-09fdb118db9c'
 
 begin
-  response = xero_client.accounting_api.get_file_content(xeroTenantId, fileId)
+  response = xero_client.accounting_api.get_file_content(xero_tenant_id, file_id)
   return response
 rescue XeroRuby::ApiError => e
   puts "Exception when calling get_file_content: #{e}"
@@ -2345,13 +2345,13 @@ <h3>Usage and SDK Samples</h3>
                     <div class="tab-pane" id="examples-Files-getFiles-0-ruby">
                       <pre class="prettyprint"><code class="language-ruby">xero_client.set_token_set(user.token_set)
 
-xeroTenantId = 'YOUR_XERO_TENANT_ID'
+xero_tenant_id = 'YOUR_XERO_TENANT_ID'
 pagesize = 50
 page = 2
 sort = 'CreatedDateUTC DESC'
 
 begin
-  response = xero_client.accounting_api.get_files(xeroTenantId, pagesize, page, sort)
+  response = xero_client.accounting_api.get_files(xero_tenant_id, pagesize, page, sort)
   return response
 rescue XeroRuby::ApiError => e
   puts "Exception when calling get_files: #{e}"
@@ -2499,11 +2499,11 @@ <h3>Usage and SDK Samples</h3>
                     <div class="tab-pane" id="examples-Files-getFolder-0-ruby">
                       <pre class="prettyprint"><code class="language-ruby">xero_client.set_token_set(user.token_set)
 
-xeroTenantId = 'YOUR_XERO_TENANT_ID'
-folderId = '4ff1e5cc-9835-40d5-bb18-09fdb118db9c'
+xero_tenant_id = 'YOUR_XERO_TENANT_ID'
+folder_id = '4ff1e5cc-9835-40d5-bb18-09fdb118db9c'
 
 begin
-  response = xero_client.accounting_api.get_folder(xeroTenantId, folderId)
+  response = xero_client.accounting_api.get_folder(xero_tenant_id, folder_id)
   return response
 rescue XeroRuby::ApiError => e
   puts "Exception when calling get_folder: #{e}"
@@ -2617,11 +2617,11 @@ <h3>Usage and SDK Samples</h3>
                     <div class="tab-pane" id="examples-Files-getFolders-0-ruby">
                       <pre class="prettyprint"><code class="language-ruby">xero_client.set_token_set(user.token_set)
 
-xeroTenantId = 'YOUR_XERO_TENANT_ID'
+xero_tenant_id = 'YOUR_XERO_TENANT_ID'
 sort = 'CreatedDateUTC DESC'
 
 begin
-  response = xero_client.accounting_api.get_folders(xeroTenantId, sort)
+  response = xero_client.accounting_api.get_folders(xero_tenant_id, sort)
   return response
 rescue XeroRuby::ApiError => e
   puts "Exception when calling get_folders: #{e}"
@@ -2729,10 +2729,10 @@ <h3>Usage and SDK Samples</h3>
                     <div class="tab-pane" id="examples-Files-getInbox-0-ruby">
                       <pre class="prettyprint"><code class="language-ruby">xero_client.set_token_set(user.token_set)
 
-xeroTenantId = 'YOUR_XERO_TENANT_ID'
+xero_tenant_id = 'YOUR_XERO_TENANT_ID'
 
 begin
-  response = xero_client.accounting_api.get_inbox(xeroTenantId)
+  response = xero_client.accounting_api.get_inbox(xero_tenant_id)
   return response
 rescue XeroRuby::ApiError => e
   puts "Exception when calling get_inbox: #{e}"
@@ -2813,11 +2813,11 @@ <h3>Usage and SDK Samples</h3>
                     <div class="tab-pane" id="examples-Files-updateFile-0-ruby">
                       <pre class="prettyprint"><code class="language-ruby">xero_client.set_token_set(user.token_set)
 
-xeroTenantId = 'YOUR_XERO_TENANT_ID'
-fileId = '4ff1e5cc-9835-40d5-bb18-09fdb118db9c'
+xero_tenant_id = 'YOUR_XERO_TENANT_ID'
+file_id = '4ff1e5cc-9835-40d5-bb18-09fdb118db9c'
 
 begin
-  response = xero_client.accounting_api.update_file(xeroTenantId, fileId, fileObject)
+  response = xero_client.accounting_api.update_file(xero_tenant_id, file_id, fileObject)
   return response
 rescue XeroRuby::ApiError => e
   puts "Exception when calling update_file: #{e}"
@@ -2958,11 +2958,11 @@ <h3>Usage and SDK Samples</h3>
                     <div class="tab-pane" id="examples-Files-updateFolder-0-ruby">
                       <pre class="prettyprint"><code class="language-ruby">xero_client.set_token_set(user.token_set)
 
-xeroTenantId = 'YOUR_XERO_TENANT_ID'
-folderId = '4ff1e5cc-9835-40d5-bb18-09fdb118db9c'
+xero_tenant_id = 'YOUR_XERO_TENANT_ID'
+folder_id = '4ff1e5cc-9835-40d5-bb18-09fdb118db9c'
 
 begin
-  response = xero_client.accounting_api.update_folder(xeroTenantId, folderId, folder)
+  response = xero_client.accounting_api.update_folder(xero_tenant_id, folder_id, folder)
   return response
 rescue XeroRuby::ApiError => e
   puts "Exception when calling update_folder: #{e}"
@@ -3107,14 +3107,14 @@ <h3>Usage and SDK Samples</h3>
                     <div class="tab-pane" id="examples-Files-uploadFile-0-ruby">
                       <pre class="prettyprint"><code class="language-ruby">xero_client.set_token_set(user.token_set)
 
-xeroTenantId = 'YOUR_XERO_TENANT_ID'
+xero_tenant_id = 'YOUR_XERO_TENANT_ID'
 body = BYTE_ARRAY_DATA_HERE
 name = 'name_example'
 filename = 'filename_example'
 mimeType = 'mimeType_example'
 
 begin
-  response = xero_client.accounting_api.upload_file(xeroTenantId, body, name, filename, mimeType)
+  response = xero_client.accounting_api.upload_file(xero_tenant_id, body, name, filename, mimeType)
   return response
 rescue XeroRuby::ApiError => e
   puts "Exception when calling upload_file: #{e}"
@@ -3289,15 +3289,15 @@ <h3>Usage and SDK Samples</h3>
                     <div class="tab-pane" id="examples-Files-uploadFileToFolder-0-ruby">
                       <pre class="prettyprint"><code class="language-ruby">xero_client.set_token_set(user.token_set)
 
-xeroTenantId = 'YOUR_XERO_TENANT_ID'
-folderId = '4ff1e5cc-9835-40d5-bb18-09fdb118db9c'
+xero_tenant_id = 'YOUR_XERO_TENANT_ID'
+folder_id = '4ff1e5cc-9835-40d5-bb18-09fdb118db9c'
 body = BYTE_ARRAY_DATA_HERE
 name = 'name_example'
 filename = 'filename_example'
 mimeType = 'mimeType_example'
 
 begin
-  response = xero_client.accounting_api.upload_file_to_folder(xeroTenantId, folderId, body, name, filename, mimeType)
+  response = xero_client.accounting_api.upload_file_to_folder(xero_tenant_id, folder_id, body, name, filename, mimeType)
   return response
 rescue XeroRuby::ApiError => e
   puts "Exception when calling upload_file_to_folder: #{e}"
diff --git a/docs/finance/index.html b/docs/finance/index.html
index 03f9dbef..d10e0ab4 100644
--- a/docs/finance/index.html
+++ b/docs/finance/index.html
@@ -2706,7 +2706,7 @@
           <nav id="scrollingNav">
             <ul class="sidenav nav nav-list">
               <li class="nav-header" data-group="Finance"><strong>SDK: </strong><span id='sdk-name'></span></li>
-              <li class="nav-header" data-group="Finance"><strong>VSN: </strong>3.7.1</li>
+              <li class="nav-header" data-group="Finance"><strong>VSN: </strong>3.8.0</li>
               <li class="nav-header" data-group="Finance"><a href="#api-Finance">Methods</a></li>
               <li data-group="Finance" data-name="getAccountingActivityAccountUsage" class="">
                 <a href="#api-Finance-getAccountingActivityAccountUsage">getAccountingActivityAccountUsage</a>
diff --git a/docs/payroll_au/index.html b/docs/payroll_au/index.html
index 0852cbf4..d954dba8 100644
--- a/docs/payroll_au/index.html
+++ b/docs/payroll_au/index.html
@@ -3254,7 +3254,7 @@
           <nav id="scrollingNav">
             <ul class="sidenav nav nav-list">
               <li class="nav-header" data-group="PayrollAu"><strong>SDK: </strong><span id='sdk-name'></span></li>
-              <li class="nav-header" data-group="PayrollAu"><strong>VSN: </strong>3.7.1</li>
+              <li class="nav-header" data-group="PayrollAu"><strong>VSN: </strong>3.8.0</li>
               <li class="nav-header" data-group="PayrollAu"><a href="#api-PayrollAu">Methods</a></li>
               <li data-group="PayrollAu" data-name="createEmployee" class="">
                 <a href="#api-PayrollAu-createEmployee">createEmployee</a>
@@ -3386,7 +3386,7 @@ <h3>Usage and SDK Samples</h3>
                     <div class="tab-pane" id="examples-PayrollAu-createEmployee-0-ruby">
                       <pre class="prettyprint"><code class="language-ruby">xero_client.set_token_set(user.token_set)
 
-xeroTenantId = 'xeroTenantId_example'
+xero_tenant_id = 'xeroTenantId_example'
 date_of_birth = 'YYYY-MM-DD'
 
 home_address = { 
@@ -3404,7 +3404,7 @@ <h3>Usage and SDK Samples</h3>
 }  
 
 begin
-  response = xero_client.accounting_api.create_employee(xeroTenantId, employee)
+  response = xero_client.accounting_api.create_employee(xero_tenant_id, employee)
   return response
 rescue XeroRuby::ApiError => e
   puts "Exception when calling create_employee: #{e}"
@@ -3519,7 +3519,7 @@ <h3>Usage and SDK Samples</h3>
                     <div class="tab-pane" id="examples-PayrollAu-createLeaveApplication-0-ruby">
                       <pre class="prettyprint"><code class="language-ruby">xero_client.set_token_set(user.token_set)
 
-xeroTenantId = 'xeroTenantId_example'
+xero_tenant_id = 'xeroTenantId_example'
 start_date = 'YYYY-MM-DD'
 end_date = 'YYYY-MM-DD'
 
@@ -3532,7 +3532,7 @@ <h3>Usage and SDK Samples</h3>
 }  
 
 begin
-  response = xero_client.accounting_api.create_leave_application(xeroTenantId, leaveApplication)
+  response = xero_client.accounting_api.create_leave_application(xero_tenant_id, leaveApplication)
   return response
 rescue XeroRuby::ApiError => e
   puts "Exception when calling create_leave_application: #{e}"
@@ -3647,7 +3647,7 @@ <h3>Usage and SDK Samples</h3>
                     <div class="tab-pane" id="examples-PayrollAu-createPayItem-0-ruby">
                       <pre class="prettyprint"><code class="language-ruby">xero_client.set_token_set(user.token_set)
 
-xeroTenantId = 'xeroTenantId_example'
+xero_tenant_id = 'xeroTenantId_example'
 
 earnings_rate = { 
   name: "Ordinary Hours 123",
@@ -3692,7 +3692,7 @@ <h3>Usage and SDK Samples</h3>
 }  
 
 begin
-  response = xero_client.accounting_api.create_pay_item(xeroTenantId, payItem)
+  response = xero_client.accounting_api.create_pay_item(xero_tenant_id, payItem)
   return response
 rescue XeroRuby::ApiError => e
   puts "Exception when calling create_pay_item: #{e}"
@@ -3804,14 +3804,14 @@ <h3>Usage and SDK Samples</h3>
                     <div class="tab-pane" id="examples-PayrollAu-createPayRun-0-ruby">
                       <pre class="prettyprint"><code class="language-ruby">xero_client.set_token_set(user.token_set)
 
-xeroTenantId = 'xeroTenantId_example'
+xero_tenant_id = 'xeroTenantId_example'
 
 pay_run = { 
   payroll_calendar_id: "00000000-0000-0000-0000-000000000000"
 }  
 
 begin
-  response = xero_client.accounting_api.create_pay_run(xeroTenantId, payRun)
+  response = xero_client.accounting_api.create_pay_run(xero_tenant_id, payRun)
   return response
 rescue XeroRuby::ApiError => e
   puts "Exception when calling create_pay_run: #{e}"
@@ -3926,7 +3926,7 @@ <h3>Usage and SDK Samples</h3>
                     <div class="tab-pane" id="examples-PayrollAu-createPayrollCalendar-0-ruby">
                       <pre class="prettyprint"><code class="language-ruby">xero_client.set_token_set(user.token_set)
 
-xeroTenantId = 'xeroTenantId_example'
+xero_tenant_id = 'xeroTenantId_example'
 start_date = 'YYYY-MM-DD'
 payment_date = 'YYYY-MM-DD'
 
@@ -3940,7 +3940,7 @@ <h3>Usage and SDK Samples</h3>
 payroll_calendars << payroll_calendar
 
 begin
-  response = xero_client.accounting_api.create_payroll_calendar(xeroTenantId, payrollCalendar)
+  response = xero_client.accounting_api.create_payroll_calendar(xero_tenant_id, payrollCalendar)
   return response
 rescue XeroRuby::ApiError => e
   puts "Exception when calling create_payroll_calendar: #{e}"
@@ -4055,7 +4055,7 @@ <h3>Usage and SDK Samples</h3>
                     <div class="tab-pane" id="examples-PayrollAu-createSuperfund-0-ruby">
                       <pre class="prettyprint"><code class="language-ruby">xero_client.set_token_set(user.token_set)
 
-xeroTenantId = 'xeroTenantId_example'
+xero_tenant_id = 'xeroTenantId_example'
 
 super_fund = { 
   type:  XeroRuby::PayrollAu::SuperFundType::REGULATED,
@@ -4063,7 +4063,7 @@ <h3>Usage and SDK Samples</h3>
 }  
 
 begin
-  response = xero_client.accounting_api.create_superfund(xeroTenantId, superFund)
+  response = xero_client.accounting_api.create_superfund(xero_tenant_id, superFund)
   return response
 rescue XeroRuby::ApiError => e
   puts "Exception when calling create_superfund: #{e}"
@@ -4178,7 +4178,7 @@ <h3>Usage and SDK Samples</h3>
                     <div class="tab-pane" id="examples-PayrollAu-createTimesheet-0-ruby">
                       <pre class="prettyprint"><code class="language-ruby">xero_client.set_token_set(user.token_set)
 
-xeroTenantId = 'xeroTenantId_example'
+xero_tenant_id = 'xeroTenantId_example'
 start_date = 'YYYY-MM-DD'
 end_date = 'YYYY-MM-DD'
 
@@ -4190,7 +4190,7 @@ <h3>Usage and SDK Samples</h3>
 }  
 
 begin
-  response = xero_client.accounting_api.create_timesheet(xeroTenantId, timesheet)
+  response = xero_client.accounting_api.create_timesheet(xero_tenant_id, timesheet)
   return response
 rescue XeroRuby::ApiError => e
   puts "Exception when calling create_timesheet: #{e}"
@@ -4305,11 +4305,11 @@ <h3>Usage and SDK Samples</h3>
                     <div class="tab-pane" id="examples-PayrollAu-getEmployee-0-ruby">
                       <pre class="prettyprint"><code class="language-ruby">xero_client.set_token_set(user.token_set)
 
-xeroTenantId = 'xeroTenantId_example'
-employeeID = '4ff1e5cc-9835-40d5-bb18-09fdb118db9c'
+xero_tenant_id = 'xeroTenantId_example'
+employee_id = '4ff1e5cc-9835-40d5-bb18-09fdb118db9c'
 
 begin
-  response = xero_client.accounting_api.get_employee(xeroTenantId, employeeID)
+  response = xero_client.accounting_api.get_employee(xero_tenant_id, employee_id)
   return response
 rescue XeroRuby::ApiError => e
   puts "Exception when calling get_employee: #{e}"
@@ -4423,14 +4423,14 @@ <h3>Usage and SDK Samples</h3>
                     <div class="tab-pane" id="examples-PayrollAu-getEmployees-0-ruby">
                       <pre class="prettyprint"><code class="language-ruby">xero_client.set_token_set(user.token_set)
 
-xeroTenantId = 'xeroTenantId_example'
-ifModifiedSince = "2020-02-06T12:17:43.202-08:00"
+xero_tenant_id = 'xeroTenantId_example'
+if_modified_since = "2020-02-06T12:17:43.202-08:00"
 where = 'Status=="ACTIVE"'
 order = 'EmailAddress%20DESC'
 page = 56
 
 begin
-  response = xero_client.accounting_api.get_employees(xeroTenantId, ifModifiedSince, where, order, page)
+  response = xero_client.accounting_api.get_employees(xero_tenant_id, if_modified_since, where, order, page)
   return response
 rescue XeroRuby::ApiError => e
   puts "Exception when calling get_employees: #{e}"
@@ -4601,11 +4601,11 @@ <h3>Usage and SDK Samples</h3>
                     <div class="tab-pane" id="examples-PayrollAu-getLeaveApplication-0-ruby">
                       <pre class="prettyprint"><code class="language-ruby">xero_client.set_token_set(user.token_set)
 
-xeroTenantId = 'xeroTenantId_example'
-leaveApplicationID = '4ff1e5cc-9835-40d5-bb18-09fdb118db9c'
+xero_tenant_id = 'xeroTenantId_example'
+leave_application_id = '4ff1e5cc-9835-40d5-bb18-09fdb118db9c'
 
 begin
-  response = xero_client.accounting_api.get_leave_application(xeroTenantId, leaveApplicationID)
+  response = xero_client.accounting_api.get_leave_application(xero_tenant_id, leave_application_id)
   return response
 rescue XeroRuby::ApiError => e
   puts "Exception when calling get_leave_application: #{e}"
@@ -4719,14 +4719,14 @@ <h3>Usage and SDK Samples</h3>
                     <div class="tab-pane" id="examples-PayrollAu-getLeaveApplications-0-ruby">
                       <pre class="prettyprint"><code class="language-ruby">xero_client.set_token_set(user.token_set)
 
-xeroTenantId = 'xeroTenantId_example'
-ifModifiedSince = "2020-02-06T12:17:43.202-08:00"
+xero_tenant_id = 'xeroTenantId_example'
+if_modified_since = "2020-02-06T12:17:43.202-08:00"
 where = 'Status=="ACTIVE"'
 order = 'EmailAddress%20DESC'
 page = 56
 
 begin
-  response = xero_client.accounting_api.get_leave_applications(xeroTenantId, ifModifiedSince, where, order, page)
+  response = xero_client.accounting_api.get_leave_applications(xero_tenant_id, if_modified_since, where, order, page)
   return response
 rescue XeroRuby::ApiError => e
   puts "Exception when calling get_leave_applications: #{e}"
@@ -4897,14 +4897,14 @@ <h3>Usage and SDK Samples</h3>
                     <div class="tab-pane" id="examples-PayrollAu-getPayItems-0-ruby">
                       <pre class="prettyprint"><code class="language-ruby">xero_client.set_token_set(user.token_set)
 
-xeroTenantId = 'xeroTenantId_example'
-ifModifiedSince = "2020-02-06T12:17:43.202-08:00"
+xero_tenant_id = 'xeroTenantId_example'
+if_modified_since = "2020-02-06T12:17:43.202-08:00"
 where = 'Status=="ACTIVE"'
 order = 'EmailAddress%20DESC'
 page = 56
 
 begin
-  response = xero_client.accounting_api.get_pay_items(xeroTenantId, ifModifiedSince, where, order, page)
+  response = xero_client.accounting_api.get_pay_items(xero_tenant_id, if_modified_since, where, order, page)
   return response
 rescue XeroRuby::ApiError => e
   puts "Exception when calling get_pay_items: #{e}"
@@ -5075,11 +5075,11 @@ <h3>Usage and SDK Samples</h3>
                     <div class="tab-pane" id="examples-PayrollAu-getPayRun-0-ruby">
                       <pre class="prettyprint"><code class="language-ruby">xero_client.set_token_set(user.token_set)
 
-xeroTenantId = 'xeroTenantId_example'
-payRunID = '4ff1e5cc-9835-40d5-bb18-09fdb118db9c'
+xero_tenant_id = 'xeroTenantId_example'
+pay_run_id = '4ff1e5cc-9835-40d5-bb18-09fdb118db9c'
 
 begin
-  response = xero_client.accounting_api.get_pay_run(xeroTenantId, payRunID)
+  response = xero_client.accounting_api.get_pay_run(xero_tenant_id, pay_run_id)
   return response
 rescue XeroRuby::ApiError => e
   puts "Exception when calling get_pay_run: #{e}"
@@ -5193,14 +5193,14 @@ <h3>Usage and SDK Samples</h3>
                     <div class="tab-pane" id="examples-PayrollAu-getPayRuns-0-ruby">
                       <pre class="prettyprint"><code class="language-ruby">xero_client.set_token_set(user.token_set)
 
-xeroTenantId = 'xeroTenantId_example'
-ifModifiedSince = "2020-02-06T12:17:43.202-08:00"
+xero_tenant_id = 'xeroTenantId_example'
+if_modified_since = "2020-02-06T12:17:43.202-08:00"
 where = 'Status=="ACTIVE"'
 order = 'EmailAddress%20DESC'
 page = 56
 
 begin
-  response = xero_client.accounting_api.get_pay_runs(xeroTenantId, ifModifiedSince, where, order, page)
+  response = xero_client.accounting_api.get_pay_runs(xero_tenant_id, if_modified_since, where, order, page)
   return response
 rescue XeroRuby::ApiError => e
   puts "Exception when calling get_pay_runs: #{e}"
@@ -5371,11 +5371,11 @@ <h3>Usage and SDK Samples</h3>
                     <div class="tab-pane" id="examples-PayrollAu-getPayrollCalendar-0-ruby">
                       <pre class="prettyprint"><code class="language-ruby">xero_client.set_token_set(user.token_set)
 
-xeroTenantId = 'xeroTenantId_example'
-payrollCalendarID = '4ff1e5cc-9835-40d5-bb18-09fdb118db9c'
+xero_tenant_id = 'xeroTenantId_example'
+payroll_calendar_id = '4ff1e5cc-9835-40d5-bb18-09fdb118db9c'
 
 begin
-  response = xero_client.accounting_api.get_payroll_calendar(xeroTenantId, payrollCalendarID)
+  response = xero_client.accounting_api.get_payroll_calendar(xero_tenant_id, payroll_calendar_id)
   return response
 rescue XeroRuby::ApiError => e
   puts "Exception when calling get_payroll_calendar: #{e}"
@@ -5489,14 +5489,14 @@ <h3>Usage and SDK Samples</h3>
                     <div class="tab-pane" id="examples-PayrollAu-getPayrollCalendars-0-ruby">
                       <pre class="prettyprint"><code class="language-ruby">xero_client.set_token_set(user.token_set)
 
-xeroTenantId = 'xeroTenantId_example'
-ifModifiedSince = "2020-02-06T12:17:43.202-08:00"
+xero_tenant_id = 'xeroTenantId_example'
+if_modified_since = "2020-02-06T12:17:43.202-08:00"
 where = 'Status=="ACTIVE"'
 order = 'EmailAddress%20DESC'
 page = 56
 
 begin
-  response = xero_client.accounting_api.get_payroll_calendars(xeroTenantId, ifModifiedSince, where, order, page)
+  response = xero_client.accounting_api.get_payroll_calendars(xero_tenant_id, if_modified_since, where, order, page)
   return response
 rescue XeroRuby::ApiError => e
   puts "Exception when calling get_payroll_calendars: #{e}"
@@ -5667,11 +5667,11 @@ <h3>Usage and SDK Samples</h3>
                     <div class="tab-pane" id="examples-PayrollAu-getPayslip-0-ruby">
                       <pre class="prettyprint"><code class="language-ruby">xero_client.set_token_set(user.token_set)
 
-xeroTenantId = 'xeroTenantId_example'
-payslipID = '4ff1e5cc-9835-40d5-bb18-09fdb118db9c'
+xero_tenant_id = 'xeroTenantId_example'
+payslip_id = '4ff1e5cc-9835-40d5-bb18-09fdb118db9c'
 
 begin
-  response = xero_client.accounting_api.get_payslip(xeroTenantId, payslipID)
+  response = xero_client.accounting_api.get_payslip(xero_tenant_id, payslip_id)
   return response
 rescue XeroRuby::ApiError => e
   puts "Exception when calling get_payslip: #{e}"
@@ -5785,10 +5785,10 @@ <h3>Usage and SDK Samples</h3>
                     <div class="tab-pane" id="examples-PayrollAu-getSettings-0-ruby">
                       <pre class="prettyprint"><code class="language-ruby">xero_client.set_token_set(user.token_set)
 
-xeroTenantId = 'xeroTenantId_example'
+xero_tenant_id = 'xeroTenantId_example'
 
 begin
-  response = xero_client.accounting_api.get_settings(xeroTenantId)
+  response = xero_client.accounting_api.get_settings(xero_tenant_id)
   return response
 rescue XeroRuby::ApiError => e
   puts "Exception when calling get_settings: #{e}"
@@ -5869,11 +5869,11 @@ <h3>Usage and SDK Samples</h3>
                     <div class="tab-pane" id="examples-PayrollAu-getSuperfund-0-ruby">
                       <pre class="prettyprint"><code class="language-ruby">xero_client.set_token_set(user.token_set)
 
-xeroTenantId = 'xeroTenantId_example'
-superFundID = '4ff1e5cc-9835-40d5-bb18-09fdb118db9c'
+xero_tenant_id = 'xeroTenantId_example'
+super_fund_id = '4ff1e5cc-9835-40d5-bb18-09fdb118db9c'
 
 begin
-  response = xero_client.accounting_api.get_superfund(xeroTenantId, superFundID)
+  response = xero_client.accounting_api.get_superfund(xero_tenant_id, super_fund_id)
   return response
 rescue XeroRuby::ApiError => e
   puts "Exception when calling get_superfund: #{e}"
@@ -5987,12 +5987,12 @@ <h3>Usage and SDK Samples</h3>
                     <div class="tab-pane" id="examples-PayrollAu-getSuperfundProducts-0-ruby">
                       <pre class="prettyprint"><code class="language-ruby">xero_client.set_token_set(user.token_set)
 
-xeroTenantId = 'xeroTenantId_example'
+xero_tenant_id = 'xeroTenantId_example'
 aBN = '40022701955'
 uSI = 'OSF0001AU'
 
 begin
-  response = xero_client.accounting_api.get_superfund_products(xeroTenantId, aBN, uSI)
+  response = xero_client.accounting_api.get_superfund_products(xero_tenant_id, aBN, uSI)
   return response
 rescue XeroRuby::ApiError => e
   puts "Exception when calling get_superfund_products: #{e}"
@@ -6120,14 +6120,14 @@ <h3>Usage and SDK Samples</h3>
                     <div class="tab-pane" id="examples-PayrollAu-getSuperfunds-0-ruby">
                       <pre class="prettyprint"><code class="language-ruby">xero_client.set_token_set(user.token_set)
 
-xeroTenantId = 'xeroTenantId_example'
-ifModifiedSince = "2020-02-06T12:17:43.202-08:00"
+xero_tenant_id = 'xeroTenantId_example'
+if_modified_since = "2020-02-06T12:17:43.202-08:00"
 where = 'Status=="ACTIVE"'
 order = 'EmailAddress%20DESC'
 page = 56
 
 begin
-  response = xero_client.accounting_api.get_superfunds(xeroTenantId, ifModifiedSince, where, order, page)
+  response = xero_client.accounting_api.get_superfunds(xero_tenant_id, if_modified_since, where, order, page)
   return response
 rescue XeroRuby::ApiError => e
   puts "Exception when calling get_superfunds: #{e}"
@@ -6298,11 +6298,11 @@ <h3>Usage and SDK Samples</h3>
                     <div class="tab-pane" id="examples-PayrollAu-getTimesheet-0-ruby">
                       <pre class="prettyprint"><code class="language-ruby">xero_client.set_token_set(user.token_set)
 
-xeroTenantId = 'xeroTenantId_example'
-timesheetID = '4ff1e5cc-9835-40d5-bb18-09fdb118db9c'
+xero_tenant_id = 'xeroTenantId_example'
+timesheet_id = '4ff1e5cc-9835-40d5-bb18-09fdb118db9c'
 
 begin
-  response = xero_client.accounting_api.get_timesheet(xeroTenantId, timesheetID)
+  response = xero_client.accounting_api.get_timesheet(xero_tenant_id, timesheet_id)
   return response
 rescue XeroRuby::ApiError => e
   puts "Exception when calling get_timesheet: #{e}"
@@ -6416,14 +6416,14 @@ <h3>Usage and SDK Samples</h3>
                     <div class="tab-pane" id="examples-PayrollAu-getTimesheets-0-ruby">
                       <pre class="prettyprint"><code class="language-ruby">xero_client.set_token_set(user.token_set)
 
-xeroTenantId = 'xeroTenantId_example'
-ifModifiedSince = "2020-02-06T12:17:43.202-08:00"
+xero_tenant_id = 'xeroTenantId_example'
+if_modified_since = "2020-02-06T12:17:43.202-08:00"
 where = 'Status=="ACTIVE"'
 order = 'EmailAddress%20DESC'
 page = 56
 
 begin
-  response = xero_client.accounting_api.get_timesheets(xeroTenantId, ifModifiedSince, where, order, page)
+  response = xero_client.accounting_api.get_timesheets(xero_tenant_id, if_modified_since, where, order, page)
   return response
 rescue XeroRuby::ApiError => e
   puts "Exception when calling get_timesheets: #{e}"
@@ -6594,8 +6594,8 @@ <h3>Usage and SDK Samples</h3>
                     <div class="tab-pane" id="examples-PayrollAu-updateEmployee-0-ruby">
                       <pre class="prettyprint"><code class="language-ruby">xero_client.set_token_set(user.token_set)
 
-xeroTenantId = 'xeroTenantId_example'
-employeeID = '4ff1e5cc-9835-40d5-bb18-09fdb118db9c'
+xero_tenant_id = 'xeroTenantId_example'
+employee_id = '4ff1e5cc-9835-40d5-bb18-09fdb118db9c'
 date_of_birth = 'YYYY-MM-DD'
 
 home_address = { 
@@ -6613,7 +6613,7 @@ <h3>Usage and SDK Samples</h3>
 }  
 
 begin
-  response = xero_client.accounting_api.update_employee(xeroTenantId, employeeID, employee)
+  response = xero_client.accounting_api.update_employee(xero_tenant_id, employee_id, employee)
   return response
 rescue XeroRuby::ApiError => e
   puts "Exception when calling update_employee: #{e}"
@@ -6757,8 +6757,8 @@ <h3>Usage and SDK Samples</h3>
                     <div class="tab-pane" id="examples-PayrollAu-updateLeaveApplication-0-ruby">
                       <pre class="prettyprint"><code class="language-ruby">xero_client.set_token_set(user.token_set)
 
-xeroTenantId = 'xeroTenantId_example'
-leaveApplicationID = '4ff1e5cc-9835-40d5-bb18-09fdb118db9c'
+xero_tenant_id = 'xeroTenantId_example'
+leave_application_id = '4ff1e5cc-9835-40d5-bb18-09fdb118db9c'
 start_date = 'YYYY-MM-DD'
 end_date = 'YYYY-MM-DD'
 
@@ -6771,7 +6771,7 @@ <h3>Usage and SDK Samples</h3>
 }  
 
 begin
-  response = xero_client.accounting_api.update_leave_application(xeroTenantId, leaveApplicationID, leaveApplication)
+  response = xero_client.accounting_api.update_leave_application(xero_tenant_id, leave_application_id, leaveApplication)
   return response
 rescue XeroRuby::ApiError => e
   puts "Exception when calling update_leave_application: #{e}"
@@ -6919,15 +6919,15 @@ <h3>Usage and SDK Samples</h3>
                     <div class="tab-pane" id="examples-PayrollAu-updatePayRun-0-ruby">
                       <pre class="prettyprint"><code class="language-ruby">xero_client.set_token_set(user.token_set)
 
-xeroTenantId = 'xeroTenantId_example'
-payRunID = '4ff1e5cc-9835-40d5-bb18-09fdb118db9c'
+xero_tenant_id = 'xeroTenantId_example'
+pay_run_id = '4ff1e5cc-9835-40d5-bb18-09fdb118db9c'
 
 pay_run = { 
   payroll_calendar_id: "00000000-0000-0000-0000-000000000000"
 }  
 
 begin
-  response = xero_client.accounting_api.update_pay_run(xeroTenantId, payRunID, payRun)
+  response = xero_client.accounting_api.update_pay_run(xero_tenant_id, pay_run_id, payRun)
   return response
 rescue XeroRuby::ApiError => e
   puts "Exception when calling update_pay_run: #{e}"
@@ -7071,8 +7071,8 @@ <h3>Usage and SDK Samples</h3>
                     <div class="tab-pane" id="examples-PayrollAu-updatePayslip-0-ruby">
                       <pre class="prettyprint"><code class="language-ruby">xero_client.set_token_set(user.token_set)
 
-xeroTenantId = 'xeroTenantId_example'
-payslipID = '4ff1e5cc-9835-40d5-bb18-09fdb118db9c'
+xero_tenant_id = 'xeroTenantId_example'
+payslip_id = '4ff1e5cc-9835-40d5-bb18-09fdb118db9c'
 
 earnings_line = { 
   earnings_rate_id: "00000000-0000-0000-0000-000000000000",
@@ -7089,7 +7089,7 @@ <h3>Usage and SDK Samples</h3>
 payslip_lines << payslip_line
 
 begin
-  response = xero_client.accounting_api.update_payslip(xeroTenantId, payslipID, payslipLines)
+  response = xero_client.accounting_api.update_payslip(xero_tenant_id, payslip_id, payslipLines)
   return response
 rescue XeroRuby::ApiError => e
   puts "Exception when calling update_payslip: #{e}"
@@ -7233,8 +7233,8 @@ <h3>Usage and SDK Samples</h3>
                     <div class="tab-pane" id="examples-PayrollAu-updateSuperfund-0-ruby">
                       <pre class="prettyprint"><code class="language-ruby">xero_client.set_token_set(user.token_set)
 
-xeroTenantId = 'xeroTenantId_example'
-superFundID = '4ff1e5cc-9835-40d5-bb18-09fdb118db9c'
+xero_tenant_id = 'xeroTenantId_example'
+super_fund_id = '4ff1e5cc-9835-40d5-bb18-09fdb118db9c'
 
 super_fund = { 
   type:  XeroRuby::PayrollAu::SuperFundType::REGULATED,
@@ -7242,7 +7242,7 @@ <h3>Usage and SDK Samples</h3>
 }  
 
 begin
-  response = xero_client.accounting_api.update_superfund(xeroTenantId, superFundID, superFund)
+  response = xero_client.accounting_api.update_superfund(xero_tenant_id, super_fund_id, superFund)
   return response
 rescue XeroRuby::ApiError => e
   puts "Exception when calling update_superfund: #{e}"
@@ -7386,8 +7386,8 @@ <h3>Usage and SDK Samples</h3>
                     <div class="tab-pane" id="examples-PayrollAu-updateTimesheet-0-ruby">
                       <pre class="prettyprint"><code class="language-ruby">xero_client.set_token_set(user.token_set)
 
-xeroTenantId = 'xeroTenantId_example'
-timesheetID = '4ff1e5cc-9835-40d5-bb18-09fdb118db9c'
+xero_tenant_id = 'xeroTenantId_example'
+timesheet_id = '4ff1e5cc-9835-40d5-bb18-09fdb118db9c'
 start_date = 'YYYY-MM-DD'
 end_date = 'YYYY-MM-DD'
 
@@ -7399,7 +7399,7 @@ <h3>Usage and SDK Samples</h3>
 }  
 
 begin
-  response = xero_client.accounting_api.update_timesheet(xeroTenantId, timesheetID, timesheet)
+  response = xero_client.accounting_api.update_timesheet(xero_tenant_id, timesheet_id, timesheet)
   return response
 rescue XeroRuby::ApiError => e
   puts "Exception when calling update_timesheet: #{e}"
diff --git a/docs/payroll_nz/index.html b/docs/payroll_nz/index.html
index 7de96f80..953b79f8 100644
--- a/docs/payroll_nz/index.html
+++ b/docs/payroll_nz/index.html
@@ -3838,7 +3838,7 @@
           <nav id="scrollingNav">
             <ul class="sidenav nav nav-list">
               <li class="nav-header" data-group="PayrollNz"><strong>SDK: </strong><span id='sdk-name'></span></li>
-              <li class="nav-header" data-group="PayrollNz"><strong>VSN: </strong>3.7.1</li>
+              <li class="nav-header" data-group="PayrollNz"><strong>VSN: </strong>3.8.0</li>
               <li class="nav-header" data-group="PayrollNz"><a href="#api-PayrollNz">Methods</a></li>
               <li data-group="PayrollNz" data-name="approveTimesheet" class="">
                 <a href="#api-PayrollNz-approveTimesheet">approveTimesheet</a>
@@ -4087,11 +4087,11 @@ <h3>Usage and SDK Samples</h3>
                     <div class="tab-pane" id="examples-PayrollNz-approveTimesheet-0-ruby">
                       <pre class="prettyprint"><code class="language-ruby">xero_client.set_token_set(user.token_set)
 
-xeroTenantId = 'xeroTenantId_example'
-timesheetID = '38400000-8cf0-11bd-b23e-10b96e4ef00d'
+xero_tenant_id = 'xeroTenantId_example'
+timesheet_id = '38400000-8cf0-11bd-b23e-10b96e4ef00d'
 
 begin
-  response = xero_client.accounting_api.approve_timesheet(xeroTenantId, timesheetID)
+  response = xero_client.accounting_api.approve_timesheet(xero_tenant_id, timesheet_id)
   return response
 rescue XeroRuby::ApiError => e
   puts "Exception when calling approve_timesheet: #{e}"
@@ -4200,7 +4200,7 @@ <h3>Usage and SDK Samples</h3>
                     <div class="tab-pane" id="examples-PayrollNz-createDeduction-0-ruby">
                       <pre class="prettyprint"><code class="language-ruby">xero_client.set_token_set(user.token_set)
 
-xeroTenantId = 'xeroTenantId_example'
+xero_tenant_id = 'xeroTenantId_example'
 
 deduction = { 
   deduction_name: "Deduction test",
@@ -4209,7 +4209,7 @@ <h3>Usage and SDK Samples</h3>
 }  
 
 begin
-  response = xero_client.accounting_api.create_deduction(xeroTenantId, deduction)
+  response = xero_client.accounting_api.create_deduction(xero_tenant_id, deduction)
   return response
 rescue XeroRuby::ApiError => e
   puts "Exception when calling create_deduction: #{e}"
@@ -4321,7 +4321,7 @@ <h3>Usage and SDK Samples</h3>
                     <div class="tab-pane" id="examples-PayrollNz-createEarningsRate-0-ruby">
                       <pre class="prettyprint"><code class="language-ruby">xero_client.set_token_set(user.token_set)
 
-xeroTenantId = 'xeroTenantId_example'
+xero_tenant_id = 'xeroTenantId_example'
 
 earnings_rate = { 
   earnings_type:  XeroRuby::PayrollNz::EarningsRate::EarningsTypeEnum::REGULAREARNINGS,
@@ -4330,7 +4330,7 @@ <h3>Usage and SDK Samples</h3>
 }  
 
 begin
-  response = xero_client.accounting_api.create_earnings_rate(xeroTenantId, earningsRate)
+  response = xero_client.accounting_api.create_earnings_rate(xero_tenant_id, earningsRate)
   return response
 rescue XeroRuby::ApiError => e
   puts "Exception when calling create_earnings_rate: #{e}"
@@ -4442,7 +4442,7 @@ <h3>Usage and SDK Samples</h3>
                     <div class="tab-pane" id="examples-PayrollNz-createEmployee-0-ruby">
                       <pre class="prettyprint"><code class="language-ruby">xero_client.set_token_set(user.token_set)
 
-xeroTenantId = 'xeroTenantId_example'
+xero_tenant_id = 'xeroTenantId_example'
 date_of_birth = 'YYYY-MM-DD'
 
 address = { 
@@ -4460,7 +4460,7 @@ <h3>Usage and SDK Samples</h3>
 }  
 
 begin
-  response = xero_client.accounting_api.create_employee(xeroTenantId, employee)
+  response = xero_client.accounting_api.create_employee(xero_tenant_id, employee)
   return response
 rescue XeroRuby::ApiError => e
   puts "Exception when calling create_employee: #{e}"
@@ -4572,8 +4572,8 @@ <h3>Usage and SDK Samples</h3>
                     <div class="tab-pane" id="examples-PayrollNz-createEmployeeEarningsTemplate-0-ruby">
                       <pre class="prettyprint"><code class="language-ruby">xero_client.set_token_set(user.token_set)
 
-xeroTenantId = 'xeroTenantId_example'
-employeeID = '4ff1e5cc-9835-40d5-bb18-09fdb118db9c'
+xero_tenant_id = 'xeroTenantId_example'
+employee_id = '4ff1e5cc-9835-40d5-bb18-09fdb118db9c'
 
 earnings_template = { 
   pay_template_earning_id: "00000000-0000-0000-0000-000000000000",
@@ -4587,7 +4587,7 @@ <h3>Usage and SDK Samples</h3>
 earnings_templates << earnings_template
 
 begin
-  response = xero_client.accounting_api.create_employee_earnings_template(xeroTenantId, employeeID, earningsTemplate)
+  response = xero_client.accounting_api.create_employee_earnings_template(xero_tenant_id, employee_id, earningsTemplate)
   return response
 rescue XeroRuby::ApiError => e
   puts "Exception when calling create_employee_earnings_template: #{e}"
@@ -4732,8 +4732,8 @@ <h3>Usage and SDK Samples</h3>
                     <div class="tab-pane" id="examples-PayrollNz-createEmployeeLeave-0-ruby">
                       <pre class="prettyprint"><code class="language-ruby">xero_client.set_token_set(user.token_set)
 
-xeroTenantId = 'xeroTenantId_example'
-employeeID = '4ff1e5cc-9835-40d5-bb18-09fdb118db9c'
+xero_tenant_id = 'xeroTenantId_example'
+employee_id = '4ff1e5cc-9835-40d5-bb18-09fdb118db9c'
 start_date = 'YYYY-MM-DD'
 end_date = 'YYYY-MM-DD'
 
@@ -4744,7 +4744,7 @@ <h3>Usage and SDK Samples</h3>
 }  
 
 begin
-  response = xero_client.accounting_api.create_employee_leave(xeroTenantId, employeeID, employeeLeave)
+  response = xero_client.accounting_api.create_employee_leave(xero_tenant_id, employee_id, employeeLeave)
   return response
 rescue XeroRuby::ApiError => e
   puts "Exception when calling create_employee_leave: #{e}"
@@ -4889,8 +4889,8 @@ <h3>Usage and SDK Samples</h3>
                     <div class="tab-pane" id="examples-PayrollNz-createEmployeeLeaveSetup-0-ruby">
                       <pre class="prettyprint"><code class="language-ruby">xero_client.set_token_set(user.token_set)
 
-xeroTenantId = 'xeroTenantId_example'
-employeeID = '4ff1e5cc-9835-40d5-bb18-09fdb118db9c'
+xero_tenant_id = 'xeroTenantId_example'
+employee_id = '4ff1e5cc-9835-40d5-bb18-09fdb118db9c'
 
 employee_leave_setup = { 
   include_holiday_pay: false,
@@ -4902,7 +4902,7 @@ <h3>Usage and SDK Samples</h3>
 }  
 
 begin
-  response = xero_client.accounting_api.create_employee_leave_setup(xeroTenantId, employeeID, employeeLeaveSetup)
+  response = xero_client.accounting_api.create_employee_leave_setup(xero_tenant_id, employee_id, employeeLeaveSetup)
   return response
 rescue XeroRuby::ApiError => e
   puts "Exception when calling create_employee_leave_setup: #{e}"
@@ -5047,8 +5047,8 @@ <h3>Usage and SDK Samples</h3>
                     <div class="tab-pane" id="examples-PayrollNz-createEmployeeLeaveType-0-ruby">
                       <pre class="prettyprint"><code class="language-ruby">xero_client.set_token_set(user.token_set)
 
-xeroTenantId = 'xeroTenantId_example'
-employeeID = '4ff1e5cc-9835-40d5-bb18-09fdb118db9c'
+xero_tenant_id = 'xeroTenantId_example'
+employee_id = '4ff1e5cc-9835-40d5-bb18-09fdb118db9c'
 
 employee_leave_type = { 
   leave_type_id: "00000000-0000-0000-0000-000000000000",
@@ -5057,7 +5057,7 @@ <h3>Usage and SDK Samples</h3>
 }  
 
 begin
-  response = xero_client.accounting_api.create_employee_leave_type(xeroTenantId, employeeID, employeeLeaveType)
+  response = xero_client.accounting_api.create_employee_leave_type(xero_tenant_id, employee_id, employeeLeaveType)
   return response
 rescue XeroRuby::ApiError => e
   puts "Exception when calling create_employee_leave_type: #{e}"
@@ -5202,8 +5202,8 @@ <h3>Usage and SDK Samples</h3>
                     <div class="tab-pane" id="examples-PayrollNz-createEmployeeOpeningBalances-0-ruby">
                       <pre class="prettyprint"><code class="language-ruby">xero_client.set_token_set(user.token_set)
 
-xeroTenantId = 'xeroTenantId_example'
-employeeID = '4ff1e5cc-9835-40d5-bb18-09fdb118db9c'
+xero_tenant_id = 'xeroTenantId_example'
+employee_id = '4ff1e5cc-9835-40d5-bb18-09fdb118db9c'
 period_end_date = 'YYYY-MM-DD'
 
 employee_opening_balance = { 
@@ -5216,7 +5216,7 @@ <h3>Usage and SDK Samples</h3>
 employee_opening_balances << employee_opening_balance
 
 begin
-  response = xero_client.accounting_api.create_employee_opening_balances(xeroTenantId, employeeID, employeeOpeningBalance)
+  response = xero_client.accounting_api.create_employee_opening_balances(xero_tenant_id, employee_id, employeeOpeningBalance)
   return response
 rescue XeroRuby::ApiError => e
   puts "Exception when calling create_employee_opening_balances: #{e}"
@@ -5361,8 +5361,8 @@ <h3>Usage and SDK Samples</h3>
                     <div class="tab-pane" id="examples-PayrollNz-createEmployeePaymentMethod-0-ruby">
                       <pre class="prettyprint"><code class="language-ruby">xero_client.set_token_set(user.token_set)
 
-xeroTenantId = 'xeroTenantId_example'
-employeeID = '4ff1e5cc-9835-40d5-bb18-09fdb118db9c'
+xero_tenant_id = 'xeroTenantId_example'
+employee_id = '4ff1e5cc-9835-40d5-bb18-09fdb118db9c'
 
 bank_account = { 
   account_name: "Charlotte Danes",
@@ -5377,7 +5377,7 @@ <h3>Usage and SDK Samples</h3>
 }  
 
 begin
-  response = xero_client.accounting_api.create_employee_payment_method(xeroTenantId, employeeID, paymentMethod)
+  response = xero_client.accounting_api.create_employee_payment_method(xero_tenant_id, employee_id, paymentMethod)
   return response
 rescue XeroRuby::ApiError => e
   puts "Exception when calling create_employee_payment_method: #{e}"
@@ -5521,8 +5521,8 @@ <h3>Usage and SDK Samples</h3>
                     <div class="tab-pane" id="examples-PayrollNz-createEmployeeSalaryAndWage-0-ruby">
                       <pre class="prettyprint"><code class="language-ruby">xero_client.set_token_set(user.token_set)
 
-xeroTenantId = 'xeroTenantId_example'
-employeeID = '4ff1e5cc-9835-40d5-bb18-09fdb118db9c'
+xero_tenant_id = 'xeroTenantId_example'
+employee_id = '4ff1e5cc-9835-40d5-bb18-09fdb118db9c'
 
 salary_and_wage = { 
   earnings_rate_id: "00000000-0000-0000-0000-000000000000",
@@ -5532,7 +5532,7 @@ <h3>Usage and SDK Samples</h3>
 }  
 
 begin
-  response = xero_client.accounting_api.create_employee_salary_and_wage(xeroTenantId, employeeID, salaryAndWage)
+  response = xero_client.accounting_api.create_employee_salary_and_wage(xero_tenant_id, employee_id, salaryAndWage)
   return response
 rescue XeroRuby::ApiError => e
   puts "Exception when calling create_employee_salary_and_wage: #{e}"
@@ -5677,8 +5677,8 @@ <h3>Usage and SDK Samples</h3>
                     <div class="tab-pane" id="examples-PayrollNz-createEmployment-0-ruby">
                       <pre class="prettyprint"><code class="language-ruby">xero_client.set_token_set(user.token_set)
 
-xeroTenantId = 'xeroTenantId_example'
-employeeID = '4ff1e5cc-9835-40d5-bb18-09fdb118db9c'
+xero_tenant_id = 'xeroTenantId_example'
+employee_id = '4ff1e5cc-9835-40d5-bb18-09fdb118db9c'
 start_date = 'YYYY-MM-DD'
 
 employment = { 
@@ -5687,7 +5687,7 @@ <h3>Usage and SDK Samples</h3>
 }  
 
 begin
-  response = xero_client.accounting_api.create_employment(xeroTenantId, employeeID, employment)
+  response = xero_client.accounting_api.create_employment(xero_tenant_id, employee_id, employment)
   return response
 rescue XeroRuby::ApiError => e
   puts "Exception when calling create_employment: #{e}"
@@ -5832,7 +5832,7 @@ <h3>Usage and SDK Samples</h3>
                     <div class="tab-pane" id="examples-PayrollNz-createLeaveType-0-ruby">
                       <pre class="prettyprint"><code class="language-ruby">xero_client.set_token_set(user.token_set)
 
-xeroTenantId = 'xeroTenantId_example'
+xero_tenant_id = 'xeroTenantId_example'
 
 leave_type = { 
   name: "LeaveType",
@@ -5841,7 +5841,7 @@ <h3>Usage and SDK Samples</h3>
 }  
 
 begin
-  response = xero_client.accounting_api.create_leave_type(xeroTenantId, leaveType)
+  response = xero_client.accounting_api.create_leave_type(xero_tenant_id, leaveType)
   return response
 rescue XeroRuby::ApiError => e
   puts "Exception when calling create_leave_type: #{e}"
@@ -5953,8 +5953,8 @@ <h3>Usage and SDK Samples</h3>
                     <div class="tab-pane" id="examples-PayrollNz-createMultipleEmployeeEarningsTemplate-0-ruby">
                       <pre class="prettyprint"><code class="language-ruby">xero_client.set_token_set(user.token_set)
 
-xeroTenantId = 'xeroTenantId_example'
-employeeID = '4ff1e5cc-9835-40d5-bb18-09fdb118db9c'
+xero_tenant_id = 'xeroTenantId_example'
+employee_id = '4ff1e5cc-9835-40d5-bb18-09fdb118db9c'
 
 earnings_template = { 
   pay_template_earning_id: "00000000-0000-0000-0000-000000000000",
@@ -5968,7 +5968,7 @@ <h3>Usage and SDK Samples</h3>
 earnings_templates << earnings_template
 
 begin
-  response = xero_client.accounting_api.create_multiple_employee_earnings_template(xeroTenantId, employeeID, earningsTemplate)
+  response = xero_client.accounting_api.create_multiple_employee_earnings_template(xero_tenant_id, employee_id, earningsTemplate)
   return response
 rescue XeroRuby::ApiError => e
   puts "Exception when calling create_multiple_employee_earnings_template: #{e}"
@@ -6113,7 +6113,7 @@ <h3>Usage and SDK Samples</h3>
                     <div class="tab-pane" id="examples-PayrollNz-createPayRun-0-ruby">
                       <pre class="prettyprint"><code class="language-ruby">xero_client.set_token_set(user.token_set)
 
-xeroTenantId = 'xeroTenantId_example'
+xero_tenant_id = 'xeroTenantId_example'
 
 pay_run = { 
   pay_run_type:  XeroRuby::PayrollNz::PayRun::pay_run_type_enum::SCHEDULED,
@@ -6121,7 +6121,7 @@ <h3>Usage and SDK Samples</h3>
 }  
 
 begin
-  response = xero_client.accounting_api.create_pay_run(xeroTenantId, payRun)
+  response = xero_client.accounting_api.create_pay_run(xero_tenant_id, payRun)
   return response
 rescue XeroRuby::ApiError => e
   puts "Exception when calling create_pay_run: #{e}"
@@ -6233,7 +6233,7 @@ <h3>Usage and SDK Samples</h3>
                     <div class="tab-pane" id="examples-PayrollNz-createPayRunCalendar-0-ruby">
                       <pre class="prettyprint"><code class="language-ruby">xero_client.set_token_set(user.token_set)
 
-xeroTenantId = 'xeroTenantId_example'
+xero_tenant_id = 'xeroTenantId_example'
 start_date = 'YYYY-MM-DD'
 payment_date = 'YYYY-MM-DD'
 
@@ -6244,7 +6244,7 @@ <h3>Usage and SDK Samples</h3>
 }  
 
 begin
-  response = xero_client.accounting_api.create_pay_run_calendar(xeroTenantId, payRunCalendar)
+  response = xero_client.accounting_api.create_pay_run_calendar(xero_tenant_id, payRunCalendar)
   return response
 rescue XeroRuby::ApiError => e
   puts "Exception when calling create_pay_run_calendar: #{e}"
@@ -6356,7 +6356,7 @@ <h3>Usage and SDK Samples</h3>
                     <div class="tab-pane" id="examples-PayrollNz-createReimbursement-0-ruby">
                       <pre class="prettyprint"><code class="language-ruby">xero_client.set_token_set(user.token_set)
 
-xeroTenantId = 'xeroTenantId_example'
+xero_tenant_id = 'xeroTenantId_example'
 
 reimbursement = { 
   name: "Test Reimbursement",
@@ -6367,7 +6367,7 @@ <h3>Usage and SDK Samples</h3>
 }  
 
 begin
-  response = xero_client.accounting_api.create_reimbursement(xeroTenantId, reimbursement)
+  response = xero_client.accounting_api.create_reimbursement(xero_tenant_id, reimbursement)
   return response
 rescue XeroRuby::ApiError => e
   puts "Exception when calling create_reimbursement: #{e}"
@@ -6479,7 +6479,7 @@ <h3>Usage and SDK Samples</h3>
                     <div class="tab-pane" id="examples-PayrollNz-createSuperannuation-0-ruby">
                       <pre class="prettyprint"><code class="language-ruby">xero_client.set_token_set(user.token_set)
 
-xeroTenantId = 'xeroTenantId_example'
+xero_tenant_id = 'xeroTenantId_example'
 
 benefit = { 
   category:  XeroRuby::PayrollNz::Benefit::CategoryEnum::COMPLYINGFUND,
@@ -6491,7 +6491,7 @@ <h3>Usage and SDK Samples</h3>
 }  
 
 begin
-  response = xero_client.accounting_api.create_superannuation(xeroTenantId, benefit)
+  response = xero_client.accounting_api.create_superannuation(xero_tenant_id, benefit)
   return response
 rescue XeroRuby::ApiError => e
   puts "Exception when calling create_superannuation: #{e}"
@@ -6603,7 +6603,7 @@ <h3>Usage and SDK Samples</h3>
                     <div class="tab-pane" id="examples-PayrollNz-createTimesheet-0-ruby">
                       <pre class="prettyprint"><code class="language-ruby">xero_client.set_token_set(user.token_set)
 
-xeroTenantId = 'xeroTenantId_example'
+xero_tenant_id = 'xeroTenantId_example'
 start_date = 'YYYY-MM-DD'
 end_date = 'YYYY-MM-DD'
 
@@ -6615,7 +6615,7 @@ <h3>Usage and SDK Samples</h3>
 }  
 
 begin
-  response = xero_client.accounting_api.create_timesheet(xeroTenantId, timesheet)
+  response = xero_client.accounting_api.create_timesheet(xero_tenant_id, timesheet)
   return response
 rescue XeroRuby::ApiError => e
   puts "Exception when calling create_timesheet: #{e}"
@@ -6727,8 +6727,8 @@ <h3>Usage and SDK Samples</h3>
                     <div class="tab-pane" id="examples-PayrollNz-createTimesheetLine-0-ruby">
                       <pre class="prettyprint"><code class="language-ruby">xero_client.set_token_set(user.token_set)
 
-xeroTenantId = 'xeroTenantId_example'
-timesheetID = '38400000-8cf0-11bd-b23e-10b96e4ef00d'
+xero_tenant_id = 'xeroTenantId_example'
+timesheet_id = '38400000-8cf0-11bd-b23e-10b96e4ef00d'
 date = 'YYYY-MM-DD'
 
 timesheet_line = { 
@@ -6740,7 +6740,7 @@ <h3>Usage and SDK Samples</h3>
 }  
 
 begin
-  response = xero_client.accounting_api.create_timesheet_line(xeroTenantId, timesheetID, timesheetLine)
+  response = xero_client.accounting_api.create_timesheet_line(xero_tenant_id, timesheet_id, timesheetLine)
   return response
 rescue XeroRuby::ApiError => e
   puts "Exception when calling create_timesheet_line: #{e}"
@@ -6885,12 +6885,12 @@ <h3>Usage and SDK Samples</h3>
                     <div class="tab-pane" id="examples-PayrollNz-deleteEmployeeEarningsTemplate-0-ruby">
                       <pre class="prettyprint"><code class="language-ruby">xero_client.set_token_set(user.token_set)
 
-xeroTenantId = 'xeroTenantId_example'
-employeeID = '4ff1e5cc-9835-40d5-bb18-09fdb118db9c'
-payTemplateEarningID = '3fa85f64-5717-4562-b3fc-2c963f66afa6'
+xero_tenant_id = 'xeroTenantId_example'
+employee_id = '4ff1e5cc-9835-40d5-bb18-09fdb118db9c'
+pay_template_earning_id = '3fa85f64-5717-4562-b3fc-2c963f66afa6'
 
 begin
-  response = xero_client.accounting_api.delete_employee_earnings_template(xeroTenantId, employeeID, payTemplateEarningID)
+  response = xero_client.accounting_api.delete_employee_earnings_template(xero_tenant_id, employee_id, pay_template_earning_id)
   return response
 rescue XeroRuby::ApiError => e
   puts "Exception when calling delete_employee_earnings_template: #{e}"
@@ -7025,12 +7025,12 @@ <h3>Usage and SDK Samples</h3>
                     <div class="tab-pane" id="examples-PayrollNz-deleteEmployeeLeave-0-ruby">
                       <pre class="prettyprint"><code class="language-ruby">xero_client.set_token_set(user.token_set)
 
-xeroTenantId = 'xeroTenantId_example'
-employeeID = '4ff1e5cc-9835-40d5-bb18-09fdb118db9c'
-leaveID = 'c4be24e5-e840-4c92-9eaa-2d86cd596314'
+xero_tenant_id = 'xeroTenantId_example'
+employee_id = '4ff1e5cc-9835-40d5-bb18-09fdb118db9c'
+leave_id = 'c4be24e5-e840-4c92-9eaa-2d86cd596314'
 
 begin
-  response = xero_client.accounting_api.delete_employee_leave(xeroTenantId, employeeID, leaveID)
+  response = xero_client.accounting_api.delete_employee_leave(xero_tenant_id, employee_id, leave_id)
   return response
 rescue XeroRuby::ApiError => e
   puts "Exception when calling delete_employee_leave: #{e}"
@@ -7165,12 +7165,12 @@ <h3>Usage and SDK Samples</h3>
                     <div class="tab-pane" id="examples-PayrollNz-deleteEmployeeSalaryAndWage-0-ruby">
                       <pre class="prettyprint"><code class="language-ruby">xero_client.set_token_set(user.token_set)
 
-xeroTenantId = 'xeroTenantId_example'
-employeeID = '4ff1e5cc-9835-40d5-bb18-09fdb118db9c'
-salaryAndWagesID = '3fa85f64-5717-4562-b3fc-2c963f66afa6'
+xero_tenant_id = 'xeroTenantId_example'
+employee_id = '4ff1e5cc-9835-40d5-bb18-09fdb118db9c'
+salary_and_wages_id = '3fa85f64-5717-4562-b3fc-2c963f66afa6'
 
 begin
-  response = xero_client.accounting_api.delete_employee_salary_and_wage(xeroTenantId, employeeID, salaryAndWagesID)
+  response = xero_client.accounting_api.delete_employee_salary_and_wage(xero_tenant_id, employee_id, salary_and_wages_id)
   return response
 rescue XeroRuby::ApiError => e
   puts "Exception when calling delete_employee_salary_and_wage: #{e}"
@@ -7305,11 +7305,11 @@ <h3>Usage and SDK Samples</h3>
                     <div class="tab-pane" id="examples-PayrollNz-deleteTimesheet-0-ruby">
                       <pre class="prettyprint"><code class="language-ruby">xero_client.set_token_set(user.token_set)
 
-xeroTenantId = 'xeroTenantId_example'
-timesheetID = '38400000-8cf0-11bd-b23e-10b96e4ef00d'
+xero_tenant_id = 'xeroTenantId_example'
+timesheet_id = '38400000-8cf0-11bd-b23e-10b96e4ef00d'
 
 begin
-  response = xero_client.accounting_api.delete_timesheet(xeroTenantId, timesheetID)
+  response = xero_client.accounting_api.delete_timesheet(xero_tenant_id, timesheet_id)
   return response
 rescue XeroRuby::ApiError => e
   puts "Exception when calling delete_timesheet: #{e}"
@@ -7418,12 +7418,12 @@ <h3>Usage and SDK Samples</h3>
                     <div class="tab-pane" id="examples-PayrollNz-deleteTimesheetLine-0-ruby">
                       <pre class="prettyprint"><code class="language-ruby">xero_client.set_token_set(user.token_set)
 
-xeroTenantId = 'xeroTenantId_example'
-timesheetID = '38400000-8cf0-11bd-b23e-10b96e4ef00d'
-timesheetLineID = '38400000-8cf0-11bd-b23e-10b96e4ef00d'
+xero_tenant_id = 'xeroTenantId_example'
+timesheet_id = '38400000-8cf0-11bd-b23e-10b96e4ef00d'
+timesheet_line_id = '38400000-8cf0-11bd-b23e-10b96e4ef00d'
 
 begin
-  response = xero_client.accounting_api.delete_timesheet_line(xeroTenantId, timesheetID, timesheetLineID)
+  response = xero_client.accounting_api.delete_timesheet_line(xero_tenant_id, timesheet_id, timesheet_line_id)
   return response
 rescue XeroRuby::ApiError => e
   puts "Exception when calling delete_timesheet_line: #{e}"
@@ -7558,11 +7558,11 @@ <h3>Usage and SDK Samples</h3>
                     <div class="tab-pane" id="examples-PayrollNz-getDeduction-0-ruby">
                       <pre class="prettyprint"><code class="language-ruby">xero_client.set_token_set(user.token_set)
 
-xeroTenantId = 'xeroTenantId_example'
-deductionId = '38400000-8cf0-11bd-b23e-10b96e4ef00d'
+xero_tenant_id = 'xeroTenantId_example'
+deduction_id = '38400000-8cf0-11bd-b23e-10b96e4ef00d'
 
 begin
-  response = xero_client.accounting_api.get_deduction(xeroTenantId, deductionId)
+  response = xero_client.accounting_api.get_deduction(xero_tenant_id, deduction_id)
   return response
 rescue XeroRuby::ApiError => e
   puts "Exception when calling get_deduction: #{e}"
@@ -7676,11 +7676,11 @@ <h3>Usage and SDK Samples</h3>
                     <div class="tab-pane" id="examples-PayrollNz-getDeductions-0-ruby">
                       <pre class="prettyprint"><code class="language-ruby">xero_client.set_token_set(user.token_set)
 
-xeroTenantId = 'xeroTenantId_example'
+xero_tenant_id = 'xeroTenantId_example'
 page = 56
 
 begin
-  response = xero_client.accounting_api.get_deductions(xeroTenantId, page)
+  response = xero_client.accounting_api.get_deductions(xero_tenant_id, page)
   return response
 rescue XeroRuby::ApiError => e
   puts "Exception when calling get_deductions: #{e}"
@@ -7788,11 +7788,11 @@ <h3>Usage and SDK Samples</h3>
                     <div class="tab-pane" id="examples-PayrollNz-getEarningsRate-0-ruby">
                       <pre class="prettyprint"><code class="language-ruby">xero_client.set_token_set(user.token_set)
 
-xeroTenantId = 'xeroTenantId_example'
-earningsRateID = '38400000-8cf0-11bd-b23e-10b96e4ef00d'
+xero_tenant_id = 'xeroTenantId_example'
+earnings_rate_id = '38400000-8cf0-11bd-b23e-10b96e4ef00d'
 
 begin
-  response = xero_client.accounting_api.get_earnings_rate(xeroTenantId, earningsRateID)
+  response = xero_client.accounting_api.get_earnings_rate(xero_tenant_id, earnings_rate_id)
   return response
 rescue XeroRuby::ApiError => e
   puts "Exception when calling get_earnings_rate: #{e}"
@@ -7906,11 +7906,11 @@ <h3>Usage and SDK Samples</h3>
                     <div class="tab-pane" id="examples-PayrollNz-getEarningsRates-0-ruby">
                       <pre class="prettyprint"><code class="language-ruby">xero_client.set_token_set(user.token_set)
 
-xeroTenantId = 'xeroTenantId_example'
+xero_tenant_id = 'xeroTenantId_example'
 page = 56
 
 begin
-  response = xero_client.accounting_api.get_earnings_rates(xeroTenantId, page)
+  response = xero_client.accounting_api.get_earnings_rates(xero_tenant_id, page)
   return response
 rescue XeroRuby::ApiError => e
   puts "Exception when calling get_earnings_rates: #{e}"
@@ -8018,11 +8018,11 @@ <h3>Usage and SDK Samples</h3>
                     <div class="tab-pane" id="examples-PayrollNz-getEmployee-0-ruby">
                       <pre class="prettyprint"><code class="language-ruby">xero_client.set_token_set(user.token_set)
 
-xeroTenantId = 'xeroTenantId_example'
-employeeID = '4ff1e5cc-9835-40d5-bb18-09fdb118db9c'
+xero_tenant_id = 'xeroTenantId_example'
+employee_id = '4ff1e5cc-9835-40d5-bb18-09fdb118db9c'
 
 begin
-  response = xero_client.accounting_api.get_employee(xeroTenantId, employeeID)
+  response = xero_client.accounting_api.get_employee(xero_tenant_id, employee_id)
   return response
 rescue XeroRuby::ApiError => e
   puts "Exception when calling get_employee: #{e}"
@@ -8136,11 +8136,11 @@ <h3>Usage and SDK Samples</h3>
                     <div class="tab-pane" id="examples-PayrollNz-getEmployeeLeaveBalances-0-ruby">
                       <pre class="prettyprint"><code class="language-ruby">xero_client.set_token_set(user.token_set)
 
-xeroTenantId = 'xeroTenantId_example'
-employeeID = '4ff1e5cc-9835-40d5-bb18-09fdb118db9c'
+xero_tenant_id = 'xeroTenantId_example'
+employee_id = '4ff1e5cc-9835-40d5-bb18-09fdb118db9c'
 
 begin
-  response = xero_client.accounting_api.get_employee_leave_balances(xeroTenantId, employeeID)
+  response = xero_client.accounting_api.get_employee_leave_balances(xero_tenant_id, employee_id)
   return response
 rescue XeroRuby::ApiError => e
   puts "Exception when calling get_employee_leave_balances: #{e}"
@@ -8254,13 +8254,13 @@ <h3>Usage and SDK Samples</h3>
                     <div class="tab-pane" id="examples-PayrollNz-getEmployeeLeavePeriods-0-ruby">
                       <pre class="prettyprint"><code class="language-ruby">xero_client.set_token_set(user.token_set)
 
-xeroTenantId = 'xeroTenantId_example'
-employeeID = '4ff1e5cc-9835-40d5-bb18-09fdb118db9c'
-startDate = "2013-10-20"
-endDate = "Johnson"
+xero_tenant_id = 'xeroTenantId_example'
+employee_id = '4ff1e5cc-9835-40d5-bb18-09fdb118db9c'
+start_date = "2013-10-20"
+end_date = "Johnson"
 
 begin
-  response = xero_client.accounting_api.get_employee_leave_periods(xeroTenantId, employeeID, startDate, endDate)
+  response = xero_client.accounting_api.get_employee_leave_periods(xero_tenant_id, employee_id, start_date, end_date)
   return response
 rescue XeroRuby::ApiError => e
   puts "Exception when calling get_employee_leave_periods: #{e}"
@@ -8427,11 +8427,11 @@ <h3>Usage and SDK Samples</h3>
                     <div class="tab-pane" id="examples-PayrollNz-getEmployeeLeaveTypes-0-ruby">
                       <pre class="prettyprint"><code class="language-ruby">xero_client.set_token_set(user.token_set)
 
-xeroTenantId = 'xeroTenantId_example'
-employeeID = '4ff1e5cc-9835-40d5-bb18-09fdb118db9c'
+xero_tenant_id = 'xeroTenantId_example'
+employee_id = '4ff1e5cc-9835-40d5-bb18-09fdb118db9c'
 
 begin
-  response = xero_client.accounting_api.get_employee_leave_types(xeroTenantId, employeeID)
+  response = xero_client.accounting_api.get_employee_leave_types(xero_tenant_id, employee_id)
   return response
 rescue XeroRuby::ApiError => e
   puts "Exception when calling get_employee_leave_types: #{e}"
@@ -8545,11 +8545,11 @@ <h3>Usage and SDK Samples</h3>
                     <div class="tab-pane" id="examples-PayrollNz-getEmployeeLeaves-0-ruby">
                       <pre class="prettyprint"><code class="language-ruby">xero_client.set_token_set(user.token_set)
 
-xeroTenantId = 'xeroTenantId_example'
-employeeID = '4ff1e5cc-9835-40d5-bb18-09fdb118db9c'
+xero_tenant_id = 'xeroTenantId_example'
+employee_id = '4ff1e5cc-9835-40d5-bb18-09fdb118db9c'
 
 begin
-  response = xero_client.accounting_api.get_employee_leaves(xeroTenantId, employeeID)
+  response = xero_client.accounting_api.get_employee_leaves(xero_tenant_id, employee_id)
   return response
 rescue XeroRuby::ApiError => e
   puts "Exception when calling get_employee_leaves: #{e}"
@@ -8663,11 +8663,11 @@ <h3>Usage and SDK Samples</h3>
                     <div class="tab-pane" id="examples-PayrollNz-getEmployeeOpeningBalances-0-ruby">
                       <pre class="prettyprint"><code class="language-ruby">xero_client.set_token_set(user.token_set)
 
-xeroTenantId = 'xeroTenantId_example'
-employeeID = '4ff1e5cc-9835-40d5-bb18-09fdb118db9c'
+xero_tenant_id = 'xeroTenantId_example'
+employee_id = '4ff1e5cc-9835-40d5-bb18-09fdb118db9c'
 
 begin
-  response = xero_client.accounting_api.get_employee_opening_balances(xeroTenantId, employeeID)
+  response = xero_client.accounting_api.get_employee_opening_balances(xero_tenant_id, employee_id)
   return response
 rescue XeroRuby::ApiError => e
   puts "Exception when calling get_employee_opening_balances: #{e}"
@@ -8781,11 +8781,11 @@ <h3>Usage and SDK Samples</h3>
                     <div class="tab-pane" id="examples-PayrollNz-getEmployeePayTemplates-0-ruby">
                       <pre class="prettyprint"><code class="language-ruby">xero_client.set_token_set(user.token_set)
 
-xeroTenantId = 'xeroTenantId_example'
-employeeID = '4ff1e5cc-9835-40d5-bb18-09fdb118db9c'
+xero_tenant_id = 'xeroTenantId_example'
+employee_id = '4ff1e5cc-9835-40d5-bb18-09fdb118db9c'
 
 begin
-  response = xero_client.accounting_api.get_employee_pay_templates(xeroTenantId, employeeID)
+  response = xero_client.accounting_api.get_employee_pay_templates(xero_tenant_id, employee_id)
   return response
 rescue XeroRuby::ApiError => e
   puts "Exception when calling get_employee_pay_templates: #{e}"
@@ -8899,11 +8899,11 @@ <h3>Usage and SDK Samples</h3>
                     <div class="tab-pane" id="examples-PayrollNz-getEmployeePaymentMethod-0-ruby">
                       <pre class="prettyprint"><code class="language-ruby">xero_client.set_token_set(user.token_set)
 
-xeroTenantId = 'xeroTenantId_example'
-employeeID = '4ff1e5cc-9835-40d5-bb18-09fdb118db9c'
+xero_tenant_id = 'xeroTenantId_example'
+employee_id = '4ff1e5cc-9835-40d5-bb18-09fdb118db9c'
 
 begin
-  response = xero_client.accounting_api.get_employee_payment_method(xeroTenantId, employeeID)
+  response = xero_client.accounting_api.get_employee_payment_method(xero_tenant_id, employee_id)
   return response
 rescue XeroRuby::ApiError => e
   puts "Exception when calling get_employee_payment_method: #{e}"
@@ -9017,12 +9017,12 @@ <h3>Usage and SDK Samples</h3>
                     <div class="tab-pane" id="examples-PayrollNz-getEmployeeSalaryAndWage-0-ruby">
                       <pre class="prettyprint"><code class="language-ruby">xero_client.set_token_set(user.token_set)
 
-xeroTenantId = 'xeroTenantId_example'
-employeeID = '4ff1e5cc-9835-40d5-bb18-09fdb118db9c'
-salaryAndWagesID = '3fa85f64-5717-4562-b3fc-2c963f66afa6'
+xero_tenant_id = 'xeroTenantId_example'
+employee_id = '4ff1e5cc-9835-40d5-bb18-09fdb118db9c'
+salary_and_wages_id = '3fa85f64-5717-4562-b3fc-2c963f66afa6'
 
 begin
-  response = xero_client.accounting_api.get_employee_salary_and_wage(xeroTenantId, employeeID, salaryAndWagesID)
+  response = xero_client.accounting_api.get_employee_salary_and_wage(xero_tenant_id, employee_id, salary_and_wages_id)
   return response
 rescue XeroRuby::ApiError => e
   puts "Exception when calling get_employee_salary_and_wage: #{e}"
@@ -9162,12 +9162,12 @@ <h3>Usage and SDK Samples</h3>
                     <div class="tab-pane" id="examples-PayrollNz-getEmployeeSalaryAndWages-0-ruby">
                       <pre class="prettyprint"><code class="language-ruby">xero_client.set_token_set(user.token_set)
 
-xeroTenantId = 'xeroTenantId_example'
-employeeID = '4ff1e5cc-9835-40d5-bb18-09fdb118db9c'
+xero_tenant_id = 'xeroTenantId_example'
+employee_id = '4ff1e5cc-9835-40d5-bb18-09fdb118db9c'
 page = 56
 
 begin
-  response = xero_client.accounting_api.get_employee_salary_and_wages(xeroTenantId, employeeID, page)
+  response = xero_client.accounting_api.get_employee_salary_and_wages(xero_tenant_id, employee_id, page)
   return response
 rescue XeroRuby::ApiError => e
   puts "Exception when calling get_employee_salary_and_wages: #{e}"
@@ -9308,11 +9308,11 @@ <h3>Usage and SDK Samples</h3>
                     <div class="tab-pane" id="examples-PayrollNz-getEmployeeTax-0-ruby">
                       <pre class="prettyprint"><code class="language-ruby">xero_client.set_token_set(user.token_set)
 
-xeroTenantId = 'xeroTenantId_example'
-employeeID = '4ff1e5cc-9835-40d5-bb18-09fdb118db9c'
+xero_tenant_id = 'xeroTenantId_example'
+employee_id = '4ff1e5cc-9835-40d5-bb18-09fdb118db9c'
 
 begin
-  response = xero_client.accounting_api.get_employee_tax(xeroTenantId, employeeID)
+  response = xero_client.accounting_api.get_employee_tax(xero_tenant_id, employee_id)
   return response
 rescue XeroRuby::ApiError => e
   puts "Exception when calling get_employee_tax: #{e}"
@@ -9426,12 +9426,12 @@ <h3>Usage and SDK Samples</h3>
                     <div class="tab-pane" id="examples-PayrollNz-getEmployees-0-ruby">
                       <pre class="prettyprint"><code class="language-ruby">xero_client.set_token_set(user.token_set)
 
-xeroTenantId = 'xeroTenantId_example'
+xero_tenant_id = 'xeroTenantId_example'
 filter = 'firstName==John,lastName==Smith'
 page = 5
 
 begin
-  response = xero_client.accounting_api.get_employees(xeroTenantId, filter, page)
+  response = xero_client.accounting_api.get_employees(xero_tenant_id, filter, page)
   return response
 rescue XeroRuby::ApiError => e
   puts "Exception when calling get_employees: #{e}"
@@ -9559,11 +9559,11 @@ <h3>Usage and SDK Samples</h3>
                     <div class="tab-pane" id="examples-PayrollNz-getLeaveType-0-ruby">
                       <pre class="prettyprint"><code class="language-ruby">xero_client.set_token_set(user.token_set)
 
-xeroTenantId = 'xeroTenantId_example'
-leaveTypeID = '38400000-8cf0-11bd-b23e-10b96e4ef00d'
+xero_tenant_id = 'xeroTenantId_example'
+leave_type_id = '38400000-8cf0-11bd-b23e-10b96e4ef00d'
 
 begin
-  response = xero_client.accounting_api.get_leave_type(xeroTenantId, leaveTypeID)
+  response = xero_client.accounting_api.get_leave_type(xero_tenant_id, leave_type_id)
   return response
 rescue XeroRuby::ApiError => e
   puts "Exception when calling get_leave_type: #{e}"
@@ -9677,12 +9677,12 @@ <h3>Usage and SDK Samples</h3>
                     <div class="tab-pane" id="examples-PayrollNz-getLeaveTypes-0-ruby">
                       <pre class="prettyprint"><code class="language-ruby">xero_client.set_token_set(user.token_set)
 
-xeroTenantId = 'xeroTenantId_example'
+xero_tenant_id = 'xeroTenantId_example'
 page = 56
-activeOnly = true
+active_only = true
 
 begin
-  response = xero_client.accounting_api.get_leave_types(xeroTenantId, page, activeOnly)
+  response = xero_client.accounting_api.get_leave_types(xero_tenant_id, page, active_only)
   return response
 rescue XeroRuby::ApiError => e
   puts "Exception when calling get_leave_types: #{e}"
@@ -9810,11 +9810,11 @@ <h3>Usage and SDK Samples</h3>
                     <div class="tab-pane" id="examples-PayrollNz-getPayRun-0-ruby">
                       <pre class="prettyprint"><code class="language-ruby">xero_client.set_token_set(user.token_set)
 
-xeroTenantId = 'xeroTenantId_example'
-payRunID = '38400000-8cf0-11bd-b23e-10b96e4ef00d'
+xero_tenant_id = 'xeroTenantId_example'
+pay_run_id = '38400000-8cf0-11bd-b23e-10b96e4ef00d'
 
 begin
-  response = xero_client.accounting_api.get_pay_run(xeroTenantId, payRunID)
+  response = xero_client.accounting_api.get_pay_run(xero_tenant_id, pay_run_id)
   return response
 rescue XeroRuby::ApiError => e
   puts "Exception when calling get_pay_run: #{e}"
@@ -9928,11 +9928,11 @@ <h3>Usage and SDK Samples</h3>
                     <div class="tab-pane" id="examples-PayrollNz-getPayRunCalendar-0-ruby">
                       <pre class="prettyprint"><code class="language-ruby">xero_client.set_token_set(user.token_set)
 
-xeroTenantId = 'xeroTenantId_example'
-payrollCalendarID = '38400000-8cf0-11bd-b23e-10b96e4ef00d'
+xero_tenant_id = 'xeroTenantId_example'
+payroll_calendar_id = '38400000-8cf0-11bd-b23e-10b96e4ef00d'
 
 begin
-  response = xero_client.accounting_api.get_pay_run_calendar(xeroTenantId, payrollCalendarID)
+  response = xero_client.accounting_api.get_pay_run_calendar(xero_tenant_id, payroll_calendar_id)
   return response
 rescue XeroRuby::ApiError => e
   puts "Exception when calling get_pay_run_calendar: #{e}"
@@ -10046,11 +10046,11 @@ <h3>Usage and SDK Samples</h3>
                     <div class="tab-pane" id="examples-PayrollNz-getPayRunCalendars-0-ruby">
                       <pre class="prettyprint"><code class="language-ruby">xero_client.set_token_set(user.token_set)
 
-xeroTenantId = 'xeroTenantId_example'
+xero_tenant_id = 'xeroTenantId_example'
 page = 56
 
 begin
-  response = xero_client.accounting_api.get_pay_run_calendars(xeroTenantId, page)
+  response = xero_client.accounting_api.get_pay_run_calendars(xero_tenant_id, page)
   return response
 rescue XeroRuby::ApiError => e
   puts "Exception when calling get_pay_run_calendars: #{e}"
@@ -10158,12 +10158,12 @@ <h3>Usage and SDK Samples</h3>
                     <div class="tab-pane" id="examples-PayrollNz-getPayRuns-0-ruby">
                       <pre class="prettyprint"><code class="language-ruby">xero_client.set_token_set(user.token_set)
 
-xeroTenantId = 'xeroTenantId_example'
+xero_tenant_id = 'xeroTenantId_example'
 page = 56
 status = 'status_example'
 
 begin
-  response = xero_client.accounting_api.get_pay_runs(xeroTenantId, page, status)
+  response = xero_client.accounting_api.get_pay_runs(xero_tenant_id, page, status)
   return response
 rescue XeroRuby::ApiError => e
   puts "Exception when calling get_pay_runs: #{e}"
@@ -10291,11 +10291,11 @@ <h3>Usage and SDK Samples</h3>
                     <div class="tab-pane" id="examples-PayrollNz-getPaySlip-0-ruby">
                       <pre class="prettyprint"><code class="language-ruby">xero_client.set_token_set(user.token_set)
 
-xeroTenantId = 'xeroTenantId_example'
-paySlipID = '38400000-8cf0-11bd-b23e-10b96e4ef00d'
+xero_tenant_id = 'xeroTenantId_example'
+pay_slip_id = '38400000-8cf0-11bd-b23e-10b96e4ef00d'
 
 begin
-  response = xero_client.accounting_api.get_pay_slip(xeroTenantId, paySlipID)
+  response = xero_client.accounting_api.get_pay_slip(xero_tenant_id, pay_slip_id)
   return response
 rescue XeroRuby::ApiError => e
   puts "Exception when calling get_pay_slip: #{e}"
@@ -10409,12 +10409,12 @@ <h3>Usage and SDK Samples</h3>
                     <div class="tab-pane" id="examples-PayrollNz-getPaySlips-0-ruby">
                       <pre class="prettyprint"><code class="language-ruby">xero_client.set_token_set(user.token_set)
 
-xeroTenantId = 'xeroTenantId_example'
-payRunID = '38400000-8cf0-11bd-b23e-10b96e4ef00d'
+xero_tenant_id = 'xeroTenantId_example'
+pay_run_id = '38400000-8cf0-11bd-b23e-10b96e4ef00d'
 page = 56
 
 begin
-  response = xero_client.accounting_api.get_pay_slips(xeroTenantId, payRunID, page)
+  response = xero_client.accounting_api.get_pay_slips(xero_tenant_id, pay_run_id, page)
   return response
 rescue XeroRuby::ApiError => e
   puts "Exception when calling get_pay_slips: #{e}"
@@ -10548,11 +10548,11 @@ <h3>Usage and SDK Samples</h3>
                     <div class="tab-pane" id="examples-PayrollNz-getReimbursement-0-ruby">
                       <pre class="prettyprint"><code class="language-ruby">xero_client.set_token_set(user.token_set)
 
-xeroTenantId = 'xeroTenantId_example'
-reimbursementID = '38400000-8cf0-11bd-b23e-10b96e4ef00d'
+xero_tenant_id = 'xeroTenantId_example'
+reimbursement_id = '38400000-8cf0-11bd-b23e-10b96e4ef00d'
 
 begin
-  response = xero_client.accounting_api.get_reimbursement(xeroTenantId, reimbursementID)
+  response = xero_client.accounting_api.get_reimbursement(xero_tenant_id, reimbursement_id)
   return response
 rescue XeroRuby::ApiError => e
   puts "Exception when calling get_reimbursement: #{e}"
@@ -10666,11 +10666,11 @@ <h3>Usage and SDK Samples</h3>
                     <div class="tab-pane" id="examples-PayrollNz-getReimbursements-0-ruby">
                       <pre class="prettyprint"><code class="language-ruby">xero_client.set_token_set(user.token_set)
 
-xeroTenantId = 'xeroTenantId_example'
+xero_tenant_id = 'xeroTenantId_example'
 page = 56
 
 begin
-  response = xero_client.accounting_api.get_reimbursements(xeroTenantId, page)
+  response = xero_client.accounting_api.get_reimbursements(xero_tenant_id, page)
   return response
 rescue XeroRuby::ApiError => e
   puts "Exception when calling get_reimbursements: #{e}"
@@ -10778,10 +10778,10 @@ <h3>Usage and SDK Samples</h3>
                     <div class="tab-pane" id="examples-PayrollNz-getSettings-0-ruby">
                       <pre class="prettyprint"><code class="language-ruby">xero_client.set_token_set(user.token_set)
 
-xeroTenantId = 'xeroTenantId_example'
+xero_tenant_id = 'xeroTenantId_example'
 
 begin
-  response = xero_client.accounting_api.get_settings(xeroTenantId)
+  response = xero_client.accounting_api.get_settings(xero_tenant_id)
   return response
 rescue XeroRuby::ApiError => e
   puts "Exception when calling get_settings: #{e}"
@@ -10862,11 +10862,11 @@ <h3>Usage and SDK Samples</h3>
                     <div class="tab-pane" id="examples-PayrollNz-getStatutoryDeduction-0-ruby">
                       <pre class="prettyprint"><code class="language-ruby">xero_client.set_token_set(user.token_set)
 
-xeroTenantId = 'xeroTenantId_example'
+xero_tenant_id = 'xeroTenantId_example'
 id = '38400000-8cf0-11bd-b23e-10b96e4ef00d'
 
 begin
-  response = xero_client.accounting_api.get_statutory_deduction(xeroTenantId, id)
+  response = xero_client.accounting_api.get_statutory_deduction(xero_tenant_id, id)
   return response
 rescue XeroRuby::ApiError => e
   puts "Exception when calling get_statutory_deduction: #{e}"
@@ -10980,11 +10980,11 @@ <h3>Usage and SDK Samples</h3>
                     <div class="tab-pane" id="examples-PayrollNz-getStatutoryDeductions-0-ruby">
                       <pre class="prettyprint"><code class="language-ruby">xero_client.set_token_set(user.token_set)
 
-xeroTenantId = 'xeroTenantId_example'
+xero_tenant_id = 'xeroTenantId_example'
 page = 56
 
 begin
-  response = xero_client.accounting_api.get_statutory_deductions(xeroTenantId, page)
+  response = xero_client.accounting_api.get_statutory_deductions(xero_tenant_id, page)
   return response
 rescue XeroRuby::ApiError => e
   puts "Exception when calling get_statutory_deductions: #{e}"
@@ -11092,11 +11092,11 @@ <h3>Usage and SDK Samples</h3>
                     <div class="tab-pane" id="examples-PayrollNz-getSuperannuation-0-ruby">
                       <pre class="prettyprint"><code class="language-ruby">xero_client.set_token_set(user.token_set)
 
-xeroTenantId = 'xeroTenantId_example'
-superannuationID = '38400000-8cf0-11bd-b23e-10b96e4ef00d'
+xero_tenant_id = 'xeroTenantId_example'
+superannuation_id = '38400000-8cf0-11bd-b23e-10b96e4ef00d'
 
 begin
-  response = xero_client.accounting_api.get_superannuation(xeroTenantId, superannuationID)
+  response = xero_client.accounting_api.get_superannuation(xero_tenant_id, superannuation_id)
   return response
 rescue XeroRuby::ApiError => e
   puts "Exception when calling get_superannuation: #{e}"
@@ -11210,11 +11210,11 @@ <h3>Usage and SDK Samples</h3>
                     <div class="tab-pane" id="examples-PayrollNz-getSuperannuations-0-ruby">
                       <pre class="prettyprint"><code class="language-ruby">xero_client.set_token_set(user.token_set)
 
-xeroTenantId = 'xeroTenantId_example'
+xero_tenant_id = 'xeroTenantId_example'
 page = 56
 
 begin
-  response = xero_client.accounting_api.get_superannuations(xeroTenantId, page)
+  response = xero_client.accounting_api.get_superannuations(xero_tenant_id, page)
   return response
 rescue XeroRuby::ApiError => e
   puts "Exception when calling get_superannuations: #{e}"
@@ -11322,11 +11322,11 @@ <h3>Usage and SDK Samples</h3>
                     <div class="tab-pane" id="examples-PayrollNz-getTimesheet-0-ruby">
                       <pre class="prettyprint"><code class="language-ruby">xero_client.set_token_set(user.token_set)
 
-xeroTenantId = 'xeroTenantId_example'
-timesheetID = '38400000-8cf0-11bd-b23e-10b96e4ef00d'
+xero_tenant_id = 'xeroTenantId_example'
+timesheet_id = '38400000-8cf0-11bd-b23e-10b96e4ef00d'
 
 begin
-  response = xero_client.accounting_api.get_timesheet(xeroTenantId, timesheetID)
+  response = xero_client.accounting_api.get_timesheet(xero_tenant_id, timesheet_id)
   return response
 rescue XeroRuby::ApiError => e
   puts "Exception when calling get_timesheet: #{e}"
@@ -11440,16 +11440,16 @@ <h3>Usage and SDK Samples</h3>
                     <div class="tab-pane" id="examples-PayrollNz-getTimesheets-0-ruby">
                       <pre class="prettyprint"><code class="language-ruby">xero_client.set_token_set(user.token_set)
 
-xeroTenantId = 'xeroTenantId_example'
+xero_tenant_id = 'xeroTenantId_example'
 page = 5
 filter = 'employeeId==00000000-0000-0000-0000-000000000000,payrollCalendarId==00000000-0000-0000-0000-000000000000'
 status = 'Draft'
-startDate = '2019-01-02'
-endDate = '2020-01-02'
+start_date = '2019-01-02'
+end_date = '2020-01-02'
 sort = 'startDate'
 
 begin
-  response = xero_client.accounting_api.get_timesheets(xeroTenantId, page, filter, status, startDate, endDate, sort)
+  response = xero_client.accounting_api.get_timesheets(xero_tenant_id, page, filter, status, start_date, end_date, sort)
   return response
 rescue XeroRuby::ApiError => e
   puts "Exception when calling get_timesheets: #{e}"
@@ -11657,10 +11657,10 @@ <h3>Usage and SDK Samples</h3>
                     <div class="tab-pane" id="examples-PayrollNz-getTrackingCategories-0-ruby">
                       <pre class="prettyprint"><code class="language-ruby">xero_client.set_token_set(user.token_set)
 
-xeroTenantId = 'xeroTenantId_example'
+xero_tenant_id = 'xeroTenantId_example'
 
 begin
-  response = xero_client.accounting_api.get_tracking_categories(xeroTenantId)
+  response = xero_client.accounting_api.get_tracking_categories(xero_tenant_id)
   return response
 rescue XeroRuby::ApiError => e
   puts "Exception when calling get_tracking_categories: #{e}"
@@ -11741,11 +11741,11 @@ <h3>Usage and SDK Samples</h3>
                     <div class="tab-pane" id="examples-PayrollNz-revertTimesheet-0-ruby">
                       <pre class="prettyprint"><code class="language-ruby">xero_client.set_token_set(user.token_set)
 
-xeroTenantId = 'xeroTenantId_example'
-timesheetID = '38400000-8cf0-11bd-b23e-10b96e4ef00d'
+xero_tenant_id = 'xeroTenantId_example'
+timesheet_id = '38400000-8cf0-11bd-b23e-10b96e4ef00d'
 
 begin
-  response = xero_client.accounting_api.revert_timesheet(xeroTenantId, timesheetID)
+  response = xero_client.accounting_api.revert_timesheet(xero_tenant_id, timesheet_id)
   return response
 rescue XeroRuby::ApiError => e
   puts "Exception when calling revert_timesheet: #{e}"
@@ -11854,8 +11854,8 @@ <h3>Usage and SDK Samples</h3>
                     <div class="tab-pane" id="examples-PayrollNz-updateEmployee-0-ruby">
                       <pre class="prettyprint"><code class="language-ruby">xero_client.set_token_set(user.token_set)
 
-xeroTenantId = 'xeroTenantId_example'
-employeeID = '4ff1e5cc-9835-40d5-bb18-09fdb118db9c'
+xero_tenant_id = 'xeroTenantId_example'
+employee_id = '4ff1e5cc-9835-40d5-bb18-09fdb118db9c'
 date_of_birth = 'YYYY-MM-DD'
 
 address = { 
@@ -11873,7 +11873,7 @@ <h3>Usage and SDK Samples</h3>
 }  
 
 begin
-  response = xero_client.accounting_api.update_employee(xeroTenantId, employeeID, employee)
+  response = xero_client.accounting_api.update_employee(xero_tenant_id, employee_id, employee)
   return response
 rescue XeroRuby::ApiError => e
   puts "Exception when calling update_employee: #{e}"
@@ -12018,9 +12018,9 @@ <h3>Usage and SDK Samples</h3>
                     <div class="tab-pane" id="examples-PayrollNz-updateEmployeeEarningsTemplate-0-ruby">
                       <pre class="prettyprint"><code class="language-ruby">xero_client.set_token_set(user.token_set)
 
-xeroTenantId = 'xeroTenantId_example'
-employeeID = '4ff1e5cc-9835-40d5-bb18-09fdb118db9c'
-payTemplateEarningID = '3fa85f64-5717-4562-b3fc-2c963f66afa6'
+xero_tenant_id = 'xeroTenantId_example'
+employee_id = '4ff1e5cc-9835-40d5-bb18-09fdb118db9c'
+pay_template_earning_id = '3fa85f64-5717-4562-b3fc-2c963f66afa6'
 
 earnings_template = { 
   pay_template_earning_id: "00000000-0000-0000-0000-000000000000",
@@ -12034,7 +12034,7 @@ <h3>Usage and SDK Samples</h3>
 earnings_templates << earnings_template
 
 begin
-  response = xero_client.accounting_api.update_employee_earnings_template(xeroTenantId, employeeID, payTemplateEarningID, earningsTemplate)
+  response = xero_client.accounting_api.update_employee_earnings_template(xero_tenant_id, employee_id, pay_template_earning_id, earningsTemplate)
   return response
 rescue XeroRuby::ApiError => e
   puts "Exception when calling update_employee_earnings_template: #{e}"
@@ -12205,9 +12205,9 @@ <h3>Usage and SDK Samples</h3>
                     <div class="tab-pane" id="examples-PayrollNz-updateEmployeeLeave-0-ruby">
                       <pre class="prettyprint"><code class="language-ruby">xero_client.set_token_set(user.token_set)
 
-xeroTenantId = 'xeroTenantId_example'
-employeeID = '4ff1e5cc-9835-40d5-bb18-09fdb118db9c'
-leaveID = 'c4be24e5-e840-4c92-9eaa-2d86cd596314'
+xero_tenant_id = 'xeroTenantId_example'
+employee_id = '4ff1e5cc-9835-40d5-bb18-09fdb118db9c'
+leave_id = 'c4be24e5-e840-4c92-9eaa-2d86cd596314'
 start_date = 'YYYY-MM-DD'
 end_date = 'YYYY-MM-DD'
 
@@ -12218,7 +12218,7 @@ <h3>Usage and SDK Samples</h3>
 }  
 
 begin
-  response = xero_client.accounting_api.update_employee_leave(xeroTenantId, employeeID, leaveID, employeeLeave)
+  response = xero_client.accounting_api.update_employee_leave(xero_tenant_id, employee_id, leave_id, employeeLeave)
   return response
 rescue XeroRuby::ApiError => e
   puts "Exception when calling update_employee_leave: #{e}"
@@ -12389,9 +12389,9 @@ <h3>Usage and SDK Samples</h3>
                     <div class="tab-pane" id="examples-PayrollNz-updateEmployeeSalaryAndWage-0-ruby">
                       <pre class="prettyprint"><code class="language-ruby">xero_client.set_token_set(user.token_set)
 
-xeroTenantId = 'xeroTenantId_example'
-employeeID = '4ff1e5cc-9835-40d5-bb18-09fdb118db9c'
-salaryAndWagesID = '3fa85f64-5717-4562-b3fc-2c963f66afa6'
+xero_tenant_id = 'xeroTenantId_example'
+employee_id = '4ff1e5cc-9835-40d5-bb18-09fdb118db9c'
+salary_and_wages_id = '3fa85f64-5717-4562-b3fc-2c963f66afa6'
 
 salary_and_wage = { 
   earnings_rate_id: "00000000-0000-0000-0000-000000000000",
@@ -12401,7 +12401,7 @@ <h3>Usage and SDK Samples</h3>
 }  
 
 begin
-  response = xero_client.accounting_api.update_employee_salary_and_wage(xeroTenantId, employeeID, salaryAndWagesID, salaryAndWage)
+  response = xero_client.accounting_api.update_employee_salary_and_wage(xero_tenant_id, employee_id, salary_and_wages_id, salaryAndWage)
   return response
 rescue XeroRuby::ApiError => e
   puts "Exception when calling update_employee_salary_and_wage: #{e}"
@@ -12572,8 +12572,8 @@ <h3>Usage and SDK Samples</h3>
                     <div class="tab-pane" id="examples-PayrollNz-updateEmployeeTax-0-ruby">
                       <pre class="prettyprint"><code class="language-ruby">xero_client.set_token_set(user.token_set)
 
-xeroTenantId = 'xeroTenantId_example'
-employeeID = '4ff1e5cc-9835-40d5-bb18-09fdb118db9c'
+xero_tenant_id = 'xeroTenantId_example'
+employee_id = '4ff1e5cc-9835-40d5-bb18-09fdb118db9c'
 student_loan_as_at = 'YYYY-MM-DD'
 
 employee_tax = { 
@@ -12592,7 +12592,7 @@ <h3>Usage and SDK Samples</h3>
 }  
 
 begin
-  response = xero_client.accounting_api.update_employee_tax(xeroTenantId, employeeID, employeeTax)
+  response = xero_client.accounting_api.update_employee_tax(xero_tenant_id, employee_id, employeeTax)
   return response
 rescue XeroRuby::ApiError => e
   puts "Exception when calling update_employee_tax: #{e}"
@@ -12736,8 +12736,8 @@ <h3>Usage and SDK Samples</h3>
                     <div class="tab-pane" id="examples-PayrollNz-updatePayRun-0-ruby">
                       <pre class="prettyprint"><code class="language-ruby">xero_client.set_token_set(user.token_set)
 
-xeroTenantId = 'xeroTenantId_example'
-payRunID = '38400000-8cf0-11bd-b23e-10b96e4ef00d'
+xero_tenant_id = 'xeroTenantId_example'
+pay_run_id = '38400000-8cf0-11bd-b23e-10b96e4ef00d'
 start_date = 'YYYY-MM-DD'
 payment_date = 'YYYY-MM-DD'
 
@@ -12748,7 +12748,7 @@ <h3>Usage and SDK Samples</h3>
 }  
 
 begin
-  response = xero_client.accounting_api.update_pay_run(xeroTenantId, payRunID, payRun)
+  response = xero_client.accounting_api.update_pay_run(xero_tenant_id, pay_run_id, payRun)
   return response
 rescue XeroRuby::ApiError => e
   puts "Exception when calling update_pay_run: #{e}"
@@ -12893,8 +12893,8 @@ <h3>Usage and SDK Samples</h3>
                     <div class="tab-pane" id="examples-PayrollNz-updatePaySlipLineItems-0-ruby">
                       <pre class="prettyprint"><code class="language-ruby">xero_client.set_token_set(user.token_set)
 
-xeroTenantId = 'xeroTenantId_example'
-paySlipID = '38400000-8cf0-11bd-b23e-10b96e4ef00d'
+xero_tenant_id = 'xeroTenantId_example'
+pay_slip_id = '38400000-8cf0-11bd-b23e-10b96e4ef00d'
 
 earnings_line = { 
   earnings_line_id: "00000000-0000-0000-0000-000000000000",
@@ -12912,7 +12912,7 @@ <h3>Usage and SDK Samples</h3>
 }  
 
 begin
-  response = xero_client.accounting_api.update_pay_slip_line_items(xeroTenantId, paySlipID, paySlip)
+  response = xero_client.accounting_api.update_pay_slip_line_items(xero_tenant_id, pay_slip_id, paySlip)
   return response
 rescue XeroRuby::ApiError => e
   puts "Exception when calling update_pay_slip_line_items: #{e}"
@@ -13057,9 +13057,9 @@ <h3>Usage and SDK Samples</h3>
                     <div class="tab-pane" id="examples-PayrollNz-updateTimesheetLine-0-ruby">
                       <pre class="prettyprint"><code class="language-ruby">xero_client.set_token_set(user.token_set)
 
-xeroTenantId = 'xeroTenantId_example'
-timesheetID = '38400000-8cf0-11bd-b23e-10b96e4ef00d'
-timesheetLineID = '38400000-8cf0-11bd-b23e-10b96e4ef00d'
+xero_tenant_id = 'xeroTenantId_example'
+timesheet_id = '38400000-8cf0-11bd-b23e-10b96e4ef00d'
+timesheet_line_id = '38400000-8cf0-11bd-b23e-10b96e4ef00d'
 date = 'YYYY-MM-DD'
 
 timesheet_line = { 
@@ -13071,7 +13071,7 @@ <h3>Usage and SDK Samples</h3>
 }  
 
 begin
-  response = xero_client.accounting_api.update_timesheet_line(xeroTenantId, timesheetID, timesheetLineID, timesheetLine)
+  response = xero_client.accounting_api.update_timesheet_line(xero_tenant_id, timesheet_id, timesheet_line_id, timesheetLine)
   return response
 rescue XeroRuby::ApiError => e
   puts "Exception when calling update_timesheet_line: #{e}"
diff --git a/docs/payroll_uk/index.html b/docs/payroll_uk/index.html
index bedcd1ce..71153994 100644
--- a/docs/payroll_uk/index.html
+++ b/docs/payroll_uk/index.html
@@ -2278,7 +2278,7 @@
       "type" : "string",
       "description" : "The NI Category of the employee",
       "example" : "A",
-      "enum" : [ "A", "B", "C", "H", "J", "M", "Z", "X" ]
+      "enum" : [ "A", "B", "C", "F", "H", "I", "J", "L", "M", "S", "V", "X", "Z" ]
     }
   },
   "description" : ""
@@ -3510,7 +3510,7 @@
           <nav id="scrollingNav">
             <ul class="sidenav nav nav-list">
               <li class="nav-header" data-group="PayrollUk"><strong>SDK: </strong><span id='sdk-name'></span></li>
-              <li class="nav-header" data-group="PayrollUk"><strong>VSN: </strong>3.7.1</li>
+              <li class="nav-header" data-group="PayrollUk"><strong>VSN: </strong>3.8.0</li>
               <li class="nav-header" data-group="PayrollUk"><a href="#api-PayrollUk">Methods</a></li>
               <li data-group="PayrollUk" data-name="approveTimesheet" class="">
                 <a href="#api-PayrollUk-approveTimesheet">approveTimesheet</a>
@@ -3765,11 +3765,11 @@ <h3>Usage and SDK Samples</h3>
                     <div class="tab-pane" id="examples-PayrollUk-approveTimesheet-0-ruby">
                       <pre class="prettyprint"><code class="language-ruby">xero_client.set_token_set(user.token_set)
 
-xeroTenantId = 'xeroTenantId_example'
-timesheetID = '38400000-8cf0-11bd-b23e-10b96e4ef00d'
+xero_tenant_id = 'xeroTenantId_example'
+timesheet_id = '38400000-8cf0-11bd-b23e-10b96e4ef00d'
 
 begin
-  response = xero_client.accounting_api.approve_timesheet(xeroTenantId, timesheetID)
+  response = xero_client.accounting_api.approve_timesheet(xero_tenant_id, timesheet_id)
   return response
 rescue XeroRuby::ApiError => e
   puts "Exception when calling approve_timesheet: #{e}"
@@ -3878,7 +3878,7 @@ <h3>Usage and SDK Samples</h3>
                     <div class="tab-pane" id="examples-PayrollUk-createBenefit-0-ruby">
                       <pre class="prettyprint"><code class="language-ruby">xero_client.set_token_set(user.token_set)
 
-xeroTenantId = 'xeroTenantId_example'
+xero_tenant_id = 'xeroTenantId_example'
 
 benefit = { 
   name: "Benefit Name",
@@ -3888,7 +3888,7 @@ <h3>Usage and SDK Samples</h3>
 }  
 
 begin
-  response = xero_client.accounting_api.create_benefit(xeroTenantId, benefit)
+  response = xero_client.accounting_api.create_benefit(xero_tenant_id, benefit)
   return response
 rescue XeroRuby::ApiError => e
   puts "Exception when calling create_benefit: #{e}"
@@ -4000,7 +4000,7 @@ <h3>Usage and SDK Samples</h3>
                     <div class="tab-pane" id="examples-PayrollUk-createDeduction-0-ruby">
                       <pre class="prettyprint"><code class="language-ruby">xero_client.set_token_set(user.token_set)
 
-xeroTenantId = 'xeroTenantId_example'
+xero_tenant_id = 'xeroTenantId_example'
 
 deduction = { 
   deduction_name: "Test Deduction",
@@ -4010,7 +4010,7 @@ <h3>Usage and SDK Samples</h3>
 }  
 
 begin
-  response = xero_client.accounting_api.create_deduction(xeroTenantId, deduction)
+  response = xero_client.accounting_api.create_deduction(xero_tenant_id, deduction)
   return response
 rescue XeroRuby::ApiError => e
   puts "Exception when calling create_deduction: #{e}"
@@ -4122,7 +4122,7 @@ <h3>Usage and SDK Samples</h3>
                     <div class="tab-pane" id="examples-PayrollUk-createEarningsRate-0-ruby">
                       <pre class="prettyprint"><code class="language-ruby">xero_client.set_token_set(user.token_set)
 
-xeroTenantId = 'xeroTenantId_example'
+xero_tenant_id = 'xeroTenantId_example'
 
 earnings_rate = { 
   earnings_type:  XeroRuby::PayrollUk::EarningsRate::earnings_type_enum::REGULAREARNINGS,
@@ -4132,7 +4132,7 @@ <h3>Usage and SDK Samples</h3>
 }  
 
 begin
-  response = xero_client.accounting_api.create_earnings_rate(xeroTenantId, earningsRate)
+  response = xero_client.accounting_api.create_earnings_rate(xero_tenant_id, earningsRate)
   return response
 rescue XeroRuby::ApiError => e
   puts "Exception when calling create_earnings_rate: #{e}"
@@ -4244,7 +4244,7 @@ <h3>Usage and SDK Samples</h3>
                     <div class="tab-pane" id="examples-PayrollUk-createEmployee-0-ruby">
                       <pre class="prettyprint"><code class="language-ruby">xero_client.set_token_set(user.token_set)
 
-xeroTenantId = 'xeroTenantId_example'
+xero_tenant_id = 'xeroTenantId_example'
 date_of_birth = 'YYYY-MM-DD'
 
 address = { 
@@ -4262,7 +4262,7 @@ <h3>Usage and SDK Samples</h3>
 }  
 
 begin
-  response = xero_client.accounting_api.create_employee(xeroTenantId, employee)
+  response = xero_client.accounting_api.create_employee(xero_tenant_id, employee)
   return response
 rescue XeroRuby::ApiError => e
   puts "Exception when calling create_employee: #{e}"
@@ -4374,8 +4374,8 @@ <h3>Usage and SDK Samples</h3>
                     <div class="tab-pane" id="examples-PayrollUk-createEmployeeEarningsTemplate-0-ruby">
                       <pre class="prettyprint"><code class="language-ruby">xero_client.set_token_set(user.token_set)
 
-xeroTenantId = 'xeroTenantId_example'
-employeeID = '4ff1e5cc-9835-40d5-bb18-09fdb118db9c'
+xero_tenant_id = 'xeroTenantId_example'
+employee_id = '4ff1e5cc-9835-40d5-bb18-09fdb118db9c'
 
 earnings_template = { 
   pay_template_earning_id: "00000000-0000-0000-0000-000000000000",
@@ -4389,7 +4389,7 @@ <h3>Usage and SDK Samples</h3>
 earnings_templates << earnings_template
 
 begin
-  response = xero_client.accounting_api.create_employee_earnings_template(xeroTenantId, employeeID, earningsTemplate)
+  response = xero_client.accounting_api.create_employee_earnings_template(xero_tenant_id, employee_id, earningsTemplate)
   return response
 rescue XeroRuby::ApiError => e
   puts "Exception when calling create_employee_earnings_template: #{e}"
@@ -4533,8 +4533,8 @@ <h3>Usage and SDK Samples</h3>
                     <div class="tab-pane" id="examples-PayrollUk-createEmployeeLeave-0-ruby">
                       <pre class="prettyprint"><code class="language-ruby">xero_client.set_token_set(user.token_set)
 
-xeroTenantId = 'xeroTenantId_example'
-employeeID = '4ff1e5cc-9835-40d5-bb18-09fdb118db9c'
+xero_tenant_id = 'xeroTenantId_example'
+employee_id = '4ff1e5cc-9835-40d5-bb18-09fdb118db9c'
 start_date = 'YYYY-MM-DD'
 end_date = 'YYYY-MM-DD'
 
@@ -4545,7 +4545,7 @@ <h3>Usage and SDK Samples</h3>
 }  
 
 begin
-  response = xero_client.accounting_api.create_employee_leave(xeroTenantId, employeeID, employeeLeave)
+  response = xero_client.accounting_api.create_employee_leave(xero_tenant_id, employee_id, employeeLeave)
   return response
 rescue XeroRuby::ApiError => e
   puts "Exception when calling create_employee_leave: #{e}"
@@ -4690,8 +4690,8 @@ <h3>Usage and SDK Samples</h3>
                     <div class="tab-pane" id="examples-PayrollUk-createEmployeeLeaveType-0-ruby">
                       <pre class="prettyprint"><code class="language-ruby">xero_client.set_token_set(user.token_set)
 
-xeroTenantId = 'xeroTenantId_example'
-employeeID = '4ff1e5cc-9835-40d5-bb18-09fdb118db9c'
+xero_tenant_id = 'xeroTenantId_example'
+employee_id = '4ff1e5cc-9835-40d5-bb18-09fdb118db9c'
 
 employee_leave_type = { 
   leave_type_id: "00000000-0000-0000-0000-000000000000",
@@ -4700,7 +4700,7 @@ <h3>Usage and SDK Samples</h3>
 }  
 
 begin
-  response = xero_client.accounting_api.create_employee_leave_type(xeroTenantId, employeeID, employeeLeaveType)
+  response = xero_client.accounting_api.create_employee_leave_type(xero_tenant_id, employee_id, employeeLeaveType)
   return response
 rescue XeroRuby::ApiError => e
   puts "Exception when calling create_employee_leave_type: #{e}"
@@ -4845,8 +4845,8 @@ <h3>Usage and SDK Samples</h3>
                     <div class="tab-pane" id="examples-PayrollUk-createEmployeeOpeningBalances-0-ruby">
                       <pre class="prettyprint"><code class="language-ruby">xero_client.set_token_set(user.token_set)
 
-xeroTenantId = 'xeroTenantId_example'
-employeeID = '4ff1e5cc-9835-40d5-bb18-09fdb118db9c'
+xero_tenant_id = 'xeroTenantId_example'
+employee_id = '4ff1e5cc-9835-40d5-bb18-09fdb118db9c'
 
 employee_opening_balances = { 
   statutory_maternity_pay: 0.0,
@@ -4857,7 +4857,7 @@ <h3>Usage and SDK Samples</h3>
 }  
 
 begin
-  response = xero_client.accounting_api.create_employee_opening_balances(xeroTenantId, employeeID, employeeOpeningBalances)
+  response = xero_client.accounting_api.create_employee_opening_balances(xero_tenant_id, employee_id, employeeOpeningBalances)
   return response
 rescue XeroRuby::ApiError => e
   puts "Exception when calling create_employee_opening_balances: #{e}"
@@ -5002,8 +5002,8 @@ <h3>Usage and SDK Samples</h3>
                     <div class="tab-pane" id="examples-PayrollUk-createEmployeePaymentMethod-0-ruby">
                       <pre class="prettyprint"><code class="language-ruby">xero_client.set_token_set(user.token_set)
 
-xeroTenantId = 'xeroTenantId_example'
-employeeID = '4ff1e5cc-9835-40d5-bb18-09fdb118db9c'
+xero_tenant_id = 'xeroTenantId_example'
+employee_id = '4ff1e5cc-9835-40d5-bb18-09fdb118db9c'
 
 bank_account = { 
   account_name: "Charlotte Danes",
@@ -5018,7 +5018,7 @@ <h3>Usage and SDK Samples</h3>
 }  
 
 begin
-  response = xero_client.accounting_api.create_employee_payment_method(xeroTenantId, employeeID, paymentMethod)
+  response = xero_client.accounting_api.create_employee_payment_method(xero_tenant_id, employee_id, paymentMethod)
   return response
 rescue XeroRuby::ApiError => e
   puts "Exception when calling create_employee_payment_method: #{e}"
@@ -5163,8 +5163,8 @@ <h3>Usage and SDK Samples</h3>
                     <div class="tab-pane" id="examples-PayrollUk-createEmployeeSalaryAndWage-0-ruby">
                       <pre class="prettyprint"><code class="language-ruby">xero_client.set_token_set(user.token_set)
 
-xeroTenantId = 'xeroTenantId_example'
-employeeID = '4ff1e5cc-9835-40d5-bb18-09fdb118db9c'
+xero_tenant_id = 'xeroTenantId_example'
+employee_id = '4ff1e5cc-9835-40d5-bb18-09fdb118db9c'
 
 salary_and_wage = { 
   earnings_rate_id: "00000000-0000-0000-0000-000000000000",
@@ -5175,7 +5175,7 @@ <h3>Usage and SDK Samples</h3>
 }  
 
 begin
-  response = xero_client.accounting_api.create_employee_salary_and_wage(xeroTenantId, employeeID, salaryAndWage)
+  response = xero_client.accounting_api.create_employee_salary_and_wage(xero_tenant_id, employee_id, salaryAndWage)
   return response
 rescue XeroRuby::ApiError => e
   puts "Exception when calling create_employee_salary_and_wage: #{e}"
@@ -5320,7 +5320,7 @@ <h3>Usage and SDK Samples</h3>
                     <div class="tab-pane" id="examples-PayrollUk-createEmployeeStatutorySickLeave-0-ruby">
                       <pre class="prettyprint"><code class="language-ruby">xero_client.set_token_set(user.token_set)
 
-xeroTenantId = 'xeroTenantId_example'
+xero_tenant_id = 'xeroTenantId_example'
 start_date = 'YYYY-MM-DD'
 end_date = 'YYYY-MM-DD'
 
@@ -5332,7 +5332,7 @@ <h3>Usage and SDK Samples</h3>
 }  
 
 begin
-  response = xero_client.accounting_api.create_employee_statutory_sick_leave(xeroTenantId, employeeStatutorySickLeave)
+  response = xero_client.accounting_api.create_employee_statutory_sick_leave(xero_tenant_id, employeeStatutorySickLeave)
   return response
 rescue XeroRuby::ApiError => e
   puts "Exception when calling create_employee_statutory_sick_leave: #{e}"
@@ -5444,8 +5444,8 @@ <h3>Usage and SDK Samples</h3>
                     <div class="tab-pane" id="examples-PayrollUk-createEmployment-0-ruby">
                       <pre class="prettyprint"><code class="language-ruby">xero_client.set_token_set(user.token_set)
 
-xeroTenantId = 'xeroTenantId_example'
-employeeID = '4ff1e5cc-9835-40d5-bb18-09fdb118db9c'
+xero_tenant_id = 'xeroTenantId_example'
+employee_id = '4ff1e5cc-9835-40d5-bb18-09fdb118db9c'
 start_date = 'YYYY-MM-DD'
 
 employment = { 
@@ -5454,7 +5454,7 @@ <h3>Usage and SDK Samples</h3>
 }  
 
 begin
-  response = xero_client.accounting_api.create_employment(xeroTenantId, employeeID, employment)
+  response = xero_client.accounting_api.create_employment(xero_tenant_id, employee_id, employment)
   return response
 rescue XeroRuby::ApiError => e
   puts "Exception when calling create_employment: #{e}"
@@ -5599,7 +5599,7 @@ <h3>Usage and SDK Samples</h3>
                     <div class="tab-pane" id="examples-PayrollUk-createLeaveType-0-ruby">
                       <pre class="prettyprint"><code class="language-ruby">xero_client.set_token_set(user.token_set)
 
-xeroTenantId = 'xeroTenantId_example'
+xero_tenant_id = 'xeroTenantId_example'
 
 leave_type = { 
   name: "LeaveType",
@@ -5608,7 +5608,7 @@ <h3>Usage and SDK Samples</h3>
 }  
 
 begin
-  response = xero_client.accounting_api.create_leave_type(xeroTenantId, leaveType)
+  response = xero_client.accounting_api.create_leave_type(xero_tenant_id, leaveType)
   return response
 rescue XeroRuby::ApiError => e
   puts "Exception when calling create_leave_type: #{e}"
@@ -5720,8 +5720,8 @@ <h3>Usage and SDK Samples</h3>
                     <div class="tab-pane" id="examples-PayrollUk-createMultipleEmployeeEarningsTemplate-0-ruby">
                       <pre class="prettyprint"><code class="language-ruby">xero_client.set_token_set(user.token_set)
 
-xeroTenantId = 'xeroTenantId_example'
-employeeID = '4ff1e5cc-9835-40d5-bb18-09fdb118db9c'
+xero_tenant_id = 'xeroTenantId_example'
+employee_id = '4ff1e5cc-9835-40d5-bb18-09fdb118db9c'
 
 earnings_template = { 
   pay_template_earning_id: "00000000-0000-0000-0000-000000000000",
@@ -5735,7 +5735,7 @@ <h3>Usage and SDK Samples</h3>
 earnings_templates << earnings_template
 
 begin
-  response = xero_client.accounting_api.create_multiple_employee_earnings_template(xeroTenantId, employeeID, earningsTemplate)
+  response = xero_client.accounting_api.create_multiple_employee_earnings_template(xero_tenant_id, employee_id, earningsTemplate)
   return response
 rescue XeroRuby::ApiError => e
   puts "Exception when calling create_multiple_employee_earnings_template: #{e}"
@@ -5880,7 +5880,7 @@ <h3>Usage and SDK Samples</h3>
                     <div class="tab-pane" id="examples-PayrollUk-createPayRunCalendar-0-ruby">
                       <pre class="prettyprint"><code class="language-ruby">xero_client.set_token_set(user.token_set)
 
-xeroTenantId = 'xeroTenantId_example'
+xero_tenant_id = 'xeroTenantId_example'
 start_date = 'YYYY-MM-DD'
 payment_date = 'YYYY-MM-DD'
 
@@ -5891,7 +5891,7 @@ <h3>Usage and SDK Samples</h3>
 }  
 
 begin
-  response = xero_client.accounting_api.create_pay_run_calendar(xeroTenantId, payRunCalendar)
+  response = xero_client.accounting_api.create_pay_run_calendar(xero_tenant_id, payRunCalendar)
   return response
 rescue XeroRuby::ApiError => e
   puts "Exception when calling create_pay_run_calendar: #{e}"
@@ -6003,7 +6003,7 @@ <h3>Usage and SDK Samples</h3>
                     <div class="tab-pane" id="examples-PayrollUk-createReimbursement-0-ruby">
                       <pre class="prettyprint"><code class="language-ruby">xero_client.set_token_set(user.token_set)
 
-xeroTenantId = 'xeroTenantId_example'
+xero_tenant_id = 'xeroTenantId_example'
 
 reimbursement = { 
   name: "Test Reimbursement",
@@ -6011,7 +6011,7 @@ <h3>Usage and SDK Samples</h3>
 }  
 
 begin
-  response = xero_client.accounting_api.create_reimbursement(xeroTenantId, reimbursement)
+  response = xero_client.accounting_api.create_reimbursement(xero_tenant_id, reimbursement)
   return response
 rescue XeroRuby::ApiError => e
   puts "Exception when calling create_reimbursement: #{e}"
@@ -6123,7 +6123,7 @@ <h3>Usage and SDK Samples</h3>
                     <div class="tab-pane" id="examples-PayrollUk-createTimesheet-0-ruby">
                       <pre class="prettyprint"><code class="language-ruby">xero_client.set_token_set(user.token_set)
 
-xeroTenantId = 'xeroTenantId_example'
+xero_tenant_id = 'xeroTenantId_example'
 start_date = 'YYYY-MM-DD'
 end_date = 'YYYY-MM-DD'
 
@@ -6135,7 +6135,7 @@ <h3>Usage and SDK Samples</h3>
 }  
 
 begin
-  response = xero_client.accounting_api.create_timesheet(xeroTenantId, timesheet)
+  response = xero_client.accounting_api.create_timesheet(xero_tenant_id, timesheet)
   return response
 rescue XeroRuby::ApiError => e
   puts "Exception when calling create_timesheet: #{e}"
@@ -6247,8 +6247,8 @@ <h3>Usage and SDK Samples</h3>
                     <div class="tab-pane" id="examples-PayrollUk-createTimesheetLine-0-ruby">
                       <pre class="prettyprint"><code class="language-ruby">xero_client.set_token_set(user.token_set)
 
-xeroTenantId = 'xeroTenantId_example'
-timesheetID = '38400000-8cf0-11bd-b23e-10b96e4ef00d'
+xero_tenant_id = 'xeroTenantId_example'
+timesheet_id = '38400000-8cf0-11bd-b23e-10b96e4ef00d'
 date = 'YYYY-MM-DD'
 
 timesheet_line = { 
@@ -6260,7 +6260,7 @@ <h3>Usage and SDK Samples</h3>
 }  
 
 begin
-  response = xero_client.accounting_api.create_timesheet_line(xeroTenantId, timesheetID, timesheetLine)
+  response = xero_client.accounting_api.create_timesheet_line(xero_tenant_id, timesheet_id, timesheetLine)
   return response
 rescue XeroRuby::ApiError => e
   puts "Exception when calling create_timesheet_line: #{e}"
@@ -6405,12 +6405,12 @@ <h3>Usage and SDK Samples</h3>
                     <div class="tab-pane" id="examples-PayrollUk-deleteEmployeeEarningsTemplate-0-ruby">
                       <pre class="prettyprint"><code class="language-ruby">xero_client.set_token_set(user.token_set)
 
-xeroTenantId = 'xeroTenantId_example'
-employeeID = '4ff1e5cc-9835-40d5-bb18-09fdb118db9c'
-payTemplateEarningID = '3fa85f64-5717-4562-b3fc-2c963f66afa6'
+xero_tenant_id = 'xeroTenantId_example'
+employee_id = '4ff1e5cc-9835-40d5-bb18-09fdb118db9c'
+pay_template_earning_id = '3fa85f64-5717-4562-b3fc-2c963f66afa6'
 
 begin
-  response = xero_client.accounting_api.delete_employee_earnings_template(xeroTenantId, employeeID, payTemplateEarningID)
+  response = xero_client.accounting_api.delete_employee_earnings_template(xero_tenant_id, employee_id, pay_template_earning_id)
   return response
 rescue XeroRuby::ApiError => e
   puts "Exception when calling delete_employee_earnings_template: #{e}"
@@ -6545,12 +6545,12 @@ <h3>Usage and SDK Samples</h3>
                     <div class="tab-pane" id="examples-PayrollUk-deleteEmployeeLeave-0-ruby">
                       <pre class="prettyprint"><code class="language-ruby">xero_client.set_token_set(user.token_set)
 
-xeroTenantId = 'xeroTenantId_example'
-employeeID = '4ff1e5cc-9835-40d5-bb18-09fdb118db9c'
-leaveID = 'c4be24e5-e840-4c92-9eaa-2d86cd596314'
+xero_tenant_id = 'xeroTenantId_example'
+employee_id = '4ff1e5cc-9835-40d5-bb18-09fdb118db9c'
+leave_id = 'c4be24e5-e840-4c92-9eaa-2d86cd596314'
 
 begin
-  response = xero_client.accounting_api.delete_employee_leave(xeroTenantId, employeeID, leaveID)
+  response = xero_client.accounting_api.delete_employee_leave(xero_tenant_id, employee_id, leave_id)
   return response
 rescue XeroRuby::ApiError => e
   puts "Exception when calling delete_employee_leave: #{e}"
@@ -6685,12 +6685,12 @@ <h3>Usage and SDK Samples</h3>
                     <div class="tab-pane" id="examples-PayrollUk-deleteEmployeeSalaryAndWage-0-ruby">
                       <pre class="prettyprint"><code class="language-ruby">xero_client.set_token_set(user.token_set)
 
-xeroTenantId = 'xeroTenantId_example'
-employeeID = '4ff1e5cc-9835-40d5-bb18-09fdb118db9c'
-salaryAndWagesID = '3fa85f64-5717-4562-b3fc-2c963f66afa6'
+xero_tenant_id = 'xeroTenantId_example'
+employee_id = '4ff1e5cc-9835-40d5-bb18-09fdb118db9c'
+salary_and_wages_id = '3fa85f64-5717-4562-b3fc-2c963f66afa6'
 
 begin
-  response = xero_client.accounting_api.delete_employee_salary_and_wage(xeroTenantId, employeeID, salaryAndWagesID)
+  response = xero_client.accounting_api.delete_employee_salary_and_wage(xero_tenant_id, employee_id, salary_and_wages_id)
   return response
 rescue XeroRuby::ApiError => e
   puts "Exception when calling delete_employee_salary_and_wage: #{e}"
@@ -6825,11 +6825,11 @@ <h3>Usage and SDK Samples</h3>
                     <div class="tab-pane" id="examples-PayrollUk-deleteTimesheet-0-ruby">
                       <pre class="prettyprint"><code class="language-ruby">xero_client.set_token_set(user.token_set)
 
-xeroTenantId = 'xeroTenantId_example'
-timesheetID = '38400000-8cf0-11bd-b23e-10b96e4ef00d'
+xero_tenant_id = 'xeroTenantId_example'
+timesheet_id = '38400000-8cf0-11bd-b23e-10b96e4ef00d'
 
 begin
-  response = xero_client.accounting_api.delete_timesheet(xeroTenantId, timesheetID)
+  response = xero_client.accounting_api.delete_timesheet(xero_tenant_id, timesheet_id)
   return response
 rescue XeroRuby::ApiError => e
   puts "Exception when calling delete_timesheet: #{e}"
@@ -6938,12 +6938,12 @@ <h3>Usage and SDK Samples</h3>
                     <div class="tab-pane" id="examples-PayrollUk-deleteTimesheetLine-0-ruby">
                       <pre class="prettyprint"><code class="language-ruby">xero_client.set_token_set(user.token_set)
 
-xeroTenantId = 'xeroTenantId_example'
-timesheetID = '38400000-8cf0-11bd-b23e-10b96e4ef00d'
-timesheetLineID = '38400000-8cf0-11bd-b23e-10b96e4ef00d'
+xero_tenant_id = 'xeroTenantId_example'
+timesheet_id = '38400000-8cf0-11bd-b23e-10b96e4ef00d'
+timesheet_line_id = '38400000-8cf0-11bd-b23e-10b96e4ef00d'
 
 begin
-  response = xero_client.accounting_api.delete_timesheet_line(xeroTenantId, timesheetID, timesheetLineID)
+  response = xero_client.accounting_api.delete_timesheet_line(xero_tenant_id, timesheet_id, timesheet_line_id)
   return response
 rescue XeroRuby::ApiError => e
   puts "Exception when calling delete_timesheet_line: #{e}"
@@ -7078,11 +7078,11 @@ <h3>Usage and SDK Samples</h3>
                     <div class="tab-pane" id="examples-PayrollUk-getBenefit-0-ruby">
                       <pre class="prettyprint"><code class="language-ruby">xero_client.set_token_set(user.token_set)
 
-xeroTenantId = 'xeroTenantId_example'
+xero_tenant_id = 'xeroTenantId_example'
 id = '38400000-8cf0-11bd-b23e-10b96e4ef00d'
 
 begin
-  response = xero_client.accounting_api.get_benefit(xeroTenantId, id)
+  response = xero_client.accounting_api.get_benefit(xero_tenant_id, id)
   return response
 rescue XeroRuby::ApiError => e
   puts "Exception when calling get_benefit: #{e}"
@@ -7196,11 +7196,11 @@ <h3>Usage and SDK Samples</h3>
                     <div class="tab-pane" id="examples-PayrollUk-getBenefits-0-ruby">
                       <pre class="prettyprint"><code class="language-ruby">xero_client.set_token_set(user.token_set)
 
-xeroTenantId = 'xeroTenantId_example'
+xero_tenant_id = 'xeroTenantId_example'
 page = 56
 
 begin
-  response = xero_client.accounting_api.get_benefits(xeroTenantId, page)
+  response = xero_client.accounting_api.get_benefits(xero_tenant_id, page)
   return response
 rescue XeroRuby::ApiError => e
   puts "Exception when calling get_benefits: #{e}"
@@ -7308,11 +7308,11 @@ <h3>Usage and SDK Samples</h3>
                     <div class="tab-pane" id="examples-PayrollUk-getDeduction-0-ruby">
                       <pre class="prettyprint"><code class="language-ruby">xero_client.set_token_set(user.token_set)
 
-xeroTenantId = 'xeroTenantId_example'
-deductionId = '38400000-8cf0-11bd-b23e-10b96e4ef00d'
+xero_tenant_id = 'xeroTenantId_example'
+deduction_id = '38400000-8cf0-11bd-b23e-10b96e4ef00d'
 
 begin
-  response = xero_client.accounting_api.get_deduction(xeroTenantId, deductionId)
+  response = xero_client.accounting_api.get_deduction(xero_tenant_id, deduction_id)
   return response
 rescue XeroRuby::ApiError => e
   puts "Exception when calling get_deduction: #{e}"
@@ -7426,11 +7426,11 @@ <h3>Usage and SDK Samples</h3>
                     <div class="tab-pane" id="examples-PayrollUk-getDeductions-0-ruby">
                       <pre class="prettyprint"><code class="language-ruby">xero_client.set_token_set(user.token_set)
 
-xeroTenantId = 'xeroTenantId_example'
+xero_tenant_id = 'xeroTenantId_example'
 page = 56
 
 begin
-  response = xero_client.accounting_api.get_deductions(xeroTenantId, page)
+  response = xero_client.accounting_api.get_deductions(xero_tenant_id, page)
   return response
 rescue XeroRuby::ApiError => e
   puts "Exception when calling get_deductions: #{e}"
@@ -7538,11 +7538,11 @@ <h3>Usage and SDK Samples</h3>
                     <div class="tab-pane" id="examples-PayrollUk-getEarningsOrder-0-ruby">
                       <pre class="prettyprint"><code class="language-ruby">xero_client.set_token_set(user.token_set)
 
-xeroTenantId = 'xeroTenantId_example'
+xero_tenant_id = 'xeroTenantId_example'
 id = '38400000-8cf0-11bd-b23e-10b96e4ef00d'
 
 begin
-  response = xero_client.accounting_api.get_earnings_order(xeroTenantId, id)
+  response = xero_client.accounting_api.get_earnings_order(xero_tenant_id, id)
   return response
 rescue XeroRuby::ApiError => e
   puts "Exception when calling get_earnings_order: #{e}"
@@ -7656,11 +7656,11 @@ <h3>Usage and SDK Samples</h3>
                     <div class="tab-pane" id="examples-PayrollUk-getEarningsOrders-0-ruby">
                       <pre class="prettyprint"><code class="language-ruby">xero_client.set_token_set(user.token_set)
 
-xeroTenantId = 'xeroTenantId_example'
+xero_tenant_id = 'xeroTenantId_example'
 page = 56
 
 begin
-  response = xero_client.accounting_api.get_earnings_orders(xeroTenantId, page)
+  response = xero_client.accounting_api.get_earnings_orders(xero_tenant_id, page)
   return response
 rescue XeroRuby::ApiError => e
   puts "Exception when calling get_earnings_orders: #{e}"
@@ -7768,11 +7768,11 @@ <h3>Usage and SDK Samples</h3>
                     <div class="tab-pane" id="examples-PayrollUk-getEarningsRate-0-ruby">
                       <pre class="prettyprint"><code class="language-ruby">xero_client.set_token_set(user.token_set)
 
-xeroTenantId = 'xeroTenantId_example'
-earningsRateID = '38400000-8cf0-11bd-b23e-10b96e4ef00d'
+xero_tenant_id = 'xeroTenantId_example'
+earnings_rate_id = '38400000-8cf0-11bd-b23e-10b96e4ef00d'
 
 begin
-  response = xero_client.accounting_api.get_earnings_rate(xeroTenantId, earningsRateID)
+  response = xero_client.accounting_api.get_earnings_rate(xero_tenant_id, earnings_rate_id)
   return response
 rescue XeroRuby::ApiError => e
   puts "Exception when calling get_earnings_rate: #{e}"
@@ -7886,11 +7886,11 @@ <h3>Usage and SDK Samples</h3>
                     <div class="tab-pane" id="examples-PayrollUk-getEarningsRates-0-ruby">
                       <pre class="prettyprint"><code class="language-ruby">xero_client.set_token_set(user.token_set)
 
-xeroTenantId = 'xeroTenantId_example'
+xero_tenant_id = 'xeroTenantId_example'
 page = 56
 
 begin
-  response = xero_client.accounting_api.get_earnings_rates(xeroTenantId, page)
+  response = xero_client.accounting_api.get_earnings_rates(xero_tenant_id, page)
   return response
 rescue XeroRuby::ApiError => e
   puts "Exception when calling get_earnings_rates: #{e}"
@@ -7998,11 +7998,11 @@ <h3>Usage and SDK Samples</h3>
                     <div class="tab-pane" id="examples-PayrollUk-getEmployee-0-ruby">
                       <pre class="prettyprint"><code class="language-ruby">xero_client.set_token_set(user.token_set)
 
-xeroTenantId = 'xeroTenantId_example'
-employeeID = '4ff1e5cc-9835-40d5-bb18-09fdb118db9c'
+xero_tenant_id = 'xeroTenantId_example'
+employee_id = '4ff1e5cc-9835-40d5-bb18-09fdb118db9c'
 
 begin
-  response = xero_client.accounting_api.get_employee(xeroTenantId, employeeID)
+  response = xero_client.accounting_api.get_employee(xero_tenant_id, employee_id)
   return response
 rescue XeroRuby::ApiError => e
   puts "Exception when calling get_employee: #{e}"
@@ -8116,12 +8116,12 @@ <h3>Usage and SDK Samples</h3>
                     <div class="tab-pane" id="examples-PayrollUk-getEmployeeLeave-0-ruby">
                       <pre class="prettyprint"><code class="language-ruby">xero_client.set_token_set(user.token_set)
 
-xeroTenantId = 'xeroTenantId_example'
-employeeID = '4ff1e5cc-9835-40d5-bb18-09fdb118db9c'
-leaveID = 'c4be24e5-e840-4c92-9eaa-2d86cd596314'
+xero_tenant_id = 'xeroTenantId_example'
+employee_id = '4ff1e5cc-9835-40d5-bb18-09fdb118db9c'
+leave_id = 'c4be24e5-e840-4c92-9eaa-2d86cd596314'
 
 begin
-  response = xero_client.accounting_api.get_employee_leave(xeroTenantId, employeeID, leaveID)
+  response = xero_client.accounting_api.get_employee_leave(xero_tenant_id, employee_id, leave_id)
   return response
 rescue XeroRuby::ApiError => e
   puts "Exception when calling get_employee_leave: #{e}"
@@ -8261,11 +8261,11 @@ <h3>Usage and SDK Samples</h3>
                     <div class="tab-pane" id="examples-PayrollUk-getEmployeeLeaveBalances-0-ruby">
                       <pre class="prettyprint"><code class="language-ruby">xero_client.set_token_set(user.token_set)
 
-xeroTenantId = 'xeroTenantId_example'
-employeeID = '4ff1e5cc-9835-40d5-bb18-09fdb118db9c'
+xero_tenant_id = 'xeroTenantId_example'
+employee_id = '4ff1e5cc-9835-40d5-bb18-09fdb118db9c'
 
 begin
-  response = xero_client.accounting_api.get_employee_leave_balances(xeroTenantId, employeeID)
+  response = xero_client.accounting_api.get_employee_leave_balances(xero_tenant_id, employee_id)
   return response
 rescue XeroRuby::ApiError => e
   puts "Exception when calling get_employee_leave_balances: #{e}"
@@ -8379,13 +8379,13 @@ <h3>Usage and SDK Samples</h3>
                     <div class="tab-pane" id="examples-PayrollUk-getEmployeeLeavePeriods-0-ruby">
                       <pre class="prettyprint"><code class="language-ruby">xero_client.set_token_set(user.token_set)
 
-xeroTenantId = 'xeroTenantId_example'
-employeeID = '00000000-0000-0000-0000-000000000000'
-startDate = "2013-10-20"
-endDate = "2013-10-20"
+xero_tenant_id = 'xeroTenantId_example'
+employee_id = '00000000-0000-0000-0000-000000000000'
+start_date = "2013-10-20"
+end_date = "2013-10-20"
 
 begin
-  response = xero_client.accounting_api.get_employee_leave_periods(xeroTenantId, employeeID, startDate, endDate)
+  response = xero_client.accounting_api.get_employee_leave_periods(xero_tenant_id, employee_id, start_date, end_date)
   return response
 rescue XeroRuby::ApiError => e
   puts "Exception when calling get_employee_leave_periods: #{e}"
@@ -8552,11 +8552,11 @@ <h3>Usage and SDK Samples</h3>
                     <div class="tab-pane" id="examples-PayrollUk-getEmployeeLeaveTypes-0-ruby">
                       <pre class="prettyprint"><code class="language-ruby">xero_client.set_token_set(user.token_set)
 
-xeroTenantId = 'xeroTenantId_example'
-employeeID = '4ff1e5cc-9835-40d5-bb18-09fdb118db9c'
+xero_tenant_id = 'xeroTenantId_example'
+employee_id = '4ff1e5cc-9835-40d5-bb18-09fdb118db9c'
 
 begin
-  response = xero_client.accounting_api.get_employee_leave_types(xeroTenantId, employeeID)
+  response = xero_client.accounting_api.get_employee_leave_types(xero_tenant_id, employee_id)
   return response
 rescue XeroRuby::ApiError => e
   puts "Exception when calling get_employee_leave_types: #{e}"
@@ -8670,11 +8670,11 @@ <h3>Usage and SDK Samples</h3>
                     <div class="tab-pane" id="examples-PayrollUk-getEmployeeLeaves-0-ruby">
                       <pre class="prettyprint"><code class="language-ruby">xero_client.set_token_set(user.token_set)
 
-xeroTenantId = 'xeroTenantId_example'
-employeeID = '4ff1e5cc-9835-40d5-bb18-09fdb118db9c'
+xero_tenant_id = 'xeroTenantId_example'
+employee_id = '4ff1e5cc-9835-40d5-bb18-09fdb118db9c'
 
 begin
-  response = xero_client.accounting_api.get_employee_leaves(xeroTenantId, employeeID)
+  response = xero_client.accounting_api.get_employee_leaves(xero_tenant_id, employee_id)
   return response
 rescue XeroRuby::ApiError => e
   puts "Exception when calling get_employee_leaves: #{e}"
@@ -8788,11 +8788,11 @@ <h3>Usage and SDK Samples</h3>
                     <div class="tab-pane" id="examples-PayrollUk-getEmployeeOpeningBalances-0-ruby">
                       <pre class="prettyprint"><code class="language-ruby">xero_client.set_token_set(user.token_set)
 
-xeroTenantId = 'xeroTenantId_example'
-employeeID = '4ff1e5cc-9835-40d5-bb18-09fdb118db9c'
+xero_tenant_id = 'xeroTenantId_example'
+employee_id = '4ff1e5cc-9835-40d5-bb18-09fdb118db9c'
 
 begin
-  response = xero_client.accounting_api.get_employee_opening_balances(xeroTenantId, employeeID)
+  response = xero_client.accounting_api.get_employee_opening_balances(xero_tenant_id, employee_id)
   return response
 rescue XeroRuby::ApiError => e
   puts "Exception when calling get_employee_opening_balances: #{e}"
@@ -8906,11 +8906,11 @@ <h3>Usage and SDK Samples</h3>
                     <div class="tab-pane" id="examples-PayrollUk-getEmployeePayTemplate-0-ruby">
                       <pre class="prettyprint"><code class="language-ruby">xero_client.set_token_set(user.token_set)
 
-xeroTenantId = 'xeroTenantId_example'
-employeeID = '4ff1e5cc-9835-40d5-bb18-09fdb118db9c'
+xero_tenant_id = 'xeroTenantId_example'
+employee_id = '4ff1e5cc-9835-40d5-bb18-09fdb118db9c'
 
 begin
-  response = xero_client.accounting_api.get_employee_pay_template(xeroTenantId, employeeID)
+  response = xero_client.accounting_api.get_employee_pay_template(xero_tenant_id, employee_id)
   return response
 rescue XeroRuby::ApiError => e
   puts "Exception when calling get_employee_pay_template: #{e}"
@@ -9024,11 +9024,11 @@ <h3>Usage and SDK Samples</h3>
                     <div class="tab-pane" id="examples-PayrollUk-getEmployeePaymentMethod-0-ruby">
                       <pre class="prettyprint"><code class="language-ruby">xero_client.set_token_set(user.token_set)
 
-xeroTenantId = 'xeroTenantId_example'
-employeeID = '4ff1e5cc-9835-40d5-bb18-09fdb118db9c'
+xero_tenant_id = 'xeroTenantId_example'
+employee_id = '4ff1e5cc-9835-40d5-bb18-09fdb118db9c'
 
 begin
-  response = xero_client.accounting_api.get_employee_payment_method(xeroTenantId, employeeID)
+  response = xero_client.accounting_api.get_employee_payment_method(xero_tenant_id, employee_id)
   return response
 rescue XeroRuby::ApiError => e
   puts "Exception when calling get_employee_payment_method: #{e}"
@@ -9142,12 +9142,12 @@ <h3>Usage and SDK Samples</h3>
                     <div class="tab-pane" id="examples-PayrollUk-getEmployeeSalaryAndWage-0-ruby">
                       <pre class="prettyprint"><code class="language-ruby">xero_client.set_token_set(user.token_set)
 
-xeroTenantId = 'xeroTenantId_example'
-employeeID = '4ff1e5cc-9835-40d5-bb18-09fdb118db9c'
-salaryAndWagesID = '3fa85f64-5717-4562-b3fc-2c963f66afa6'
+xero_tenant_id = 'xeroTenantId_example'
+employee_id = '4ff1e5cc-9835-40d5-bb18-09fdb118db9c'
+salary_and_wages_id = '3fa85f64-5717-4562-b3fc-2c963f66afa6'
 
 begin
-  response = xero_client.accounting_api.get_employee_salary_and_wage(xeroTenantId, employeeID, salaryAndWagesID)
+  response = xero_client.accounting_api.get_employee_salary_and_wage(xero_tenant_id, employee_id, salary_and_wages_id)
   return response
 rescue XeroRuby::ApiError => e
   puts "Exception when calling get_employee_salary_and_wage: #{e}"
@@ -9287,12 +9287,12 @@ <h3>Usage and SDK Samples</h3>
                     <div class="tab-pane" id="examples-PayrollUk-getEmployeeSalaryAndWages-0-ruby">
                       <pre class="prettyprint"><code class="language-ruby">xero_client.set_token_set(user.token_set)
 
-xeroTenantId = 'xeroTenantId_example'
-employeeID = '4ff1e5cc-9835-40d5-bb18-09fdb118db9c'
+xero_tenant_id = 'xeroTenantId_example'
+employee_id = '4ff1e5cc-9835-40d5-bb18-09fdb118db9c'
 page = 56
 
 begin
-  response = xero_client.accounting_api.get_employee_salary_and_wages(xeroTenantId, employeeID, page)
+  response = xero_client.accounting_api.get_employee_salary_and_wages(xero_tenant_id, employee_id, page)
   return response
 rescue XeroRuby::ApiError => e
   puts "Exception when calling get_employee_salary_and_wages: #{e}"
@@ -9433,13 +9433,13 @@ <h3>Usage and SDK Samples</h3>
                     <div class="tab-pane" id="examples-PayrollUk-getEmployeeStatutoryLeaveBalances-0-ruby">
                       <pre class="prettyprint"><code class="language-ruby">xero_client.set_token_set(user.token_set)
 
-xeroTenantId = 'xeroTenantId_example'
-employeeID = '4ff1e5cc-9835-40d5-bb18-09fdb118db9c'
-leaveType = 'sick'
-asOfDate = "2013-10-20"
+xero_tenant_id = 'xeroTenantId_example'
+employee_id = '4ff1e5cc-9835-40d5-bb18-09fdb118db9c'
+leave_type = 'sick'
+as_of_date = "2013-10-20"
 
 begin
-  response = xero_client.accounting_api.get_employee_statutory_leave_balances(xeroTenantId, employeeID, leaveType, asOfDate)
+  response = xero_client.accounting_api.get_employee_statutory_leave_balances(xero_tenant_id, employee_id, leave_type, as_of_date)
   return response
 rescue XeroRuby::ApiError => e
   puts "Exception when calling get_employee_statutory_leave_balances: #{e}"
@@ -9603,11 +9603,11 @@ <h3>Usage and SDK Samples</h3>
                     <div class="tab-pane" id="examples-PayrollUk-getEmployeeStatutorySickLeave-0-ruby">
                       <pre class="prettyprint"><code class="language-ruby">xero_client.set_token_set(user.token_set)
 
-xeroTenantId = 'xeroTenantId_example'
-statutorySickLeaveID = '4ff1e5cc-9835-40d5-bb18-09fdb118db9c'
+xero_tenant_id = 'xeroTenantId_example'
+statutory_sick_leave_id = '4ff1e5cc-9835-40d5-bb18-09fdb118db9c'
 
 begin
-  response = xero_client.accounting_api.get_employee_statutory_sick_leave(xeroTenantId, statutorySickLeaveID)
+  response = xero_client.accounting_api.get_employee_statutory_sick_leave(xero_tenant_id, statutory_sick_leave_id)
   return response
 rescue XeroRuby::ApiError => e
   puts "Exception when calling get_employee_statutory_sick_leave: #{e}"
@@ -9721,11 +9721,11 @@ <h3>Usage and SDK Samples</h3>
                     <div class="tab-pane" id="examples-PayrollUk-getEmployeeTax-0-ruby">
                       <pre class="prettyprint"><code class="language-ruby">xero_client.set_token_set(user.token_set)
 
-xeroTenantId = 'xeroTenantId_example'
-employeeID = '4ff1e5cc-9835-40d5-bb18-09fdb118db9c'
+xero_tenant_id = 'xeroTenantId_example'
+employee_id = '4ff1e5cc-9835-40d5-bb18-09fdb118db9c'
 
 begin
-  response = xero_client.accounting_api.get_employee_tax(xeroTenantId, employeeID)
+  response = xero_client.accounting_api.get_employee_tax(xero_tenant_id, employee_id)
   return response
 rescue XeroRuby::ApiError => e
   puts "Exception when calling get_employee_tax: #{e}"
@@ -9839,12 +9839,12 @@ <h3>Usage and SDK Samples</h3>
                     <div class="tab-pane" id="examples-PayrollUk-getEmployees-0-ruby">
                       <pre class="prettyprint"><code class="language-ruby">xero_client.set_token_set(user.token_set)
 
-xeroTenantId = 'xeroTenantId_example'
+xero_tenant_id = 'xeroTenantId_example'
 filter = 'firstName==John,lastName==Smith,isOffPayrollWorker==false'
 page = 5
 
 begin
-  response = xero_client.accounting_api.get_employees(xeroTenantId, filter, page)
+  response = xero_client.accounting_api.get_employees(xero_tenant_id, filter, page)
   return response
 rescue XeroRuby::ApiError => e
   puts "Exception when calling get_employees: #{e}"
@@ -9972,11 +9972,11 @@ <h3>Usage and SDK Samples</h3>
                     <div class="tab-pane" id="examples-PayrollUk-getLeaveType-0-ruby">
                       <pre class="prettyprint"><code class="language-ruby">xero_client.set_token_set(user.token_set)
 
-xeroTenantId = 'xeroTenantId_example'
-leaveTypeID = '38400000-8cf0-11bd-b23e-10b96e4ef00d'
+xero_tenant_id = 'xeroTenantId_example'
+leave_type_id = '38400000-8cf0-11bd-b23e-10b96e4ef00d'
 
 begin
-  response = xero_client.accounting_api.get_leave_type(xeroTenantId, leaveTypeID)
+  response = xero_client.accounting_api.get_leave_type(xero_tenant_id, leave_type_id)
   return response
 rescue XeroRuby::ApiError => e
   puts "Exception when calling get_leave_type: #{e}"
@@ -10090,12 +10090,12 @@ <h3>Usage and SDK Samples</h3>
                     <div class="tab-pane" id="examples-PayrollUk-getLeaveTypes-0-ruby">
                       <pre class="prettyprint"><code class="language-ruby">xero_client.set_token_set(user.token_set)
 
-xeroTenantId = 'xeroTenantId_example'
+xero_tenant_id = 'xeroTenantId_example'
 page = 56
-activeOnly = true
+active_only = true
 
 begin
-  response = xero_client.accounting_api.get_leave_types(xeroTenantId, page, activeOnly)
+  response = xero_client.accounting_api.get_leave_types(xero_tenant_id, page, active_only)
   return response
 rescue XeroRuby::ApiError => e
   puts "Exception when calling get_leave_types: #{e}"
@@ -10223,11 +10223,11 @@ <h3>Usage and SDK Samples</h3>
                     <div class="tab-pane" id="examples-PayrollUk-getPayRun-0-ruby">
                       <pre class="prettyprint"><code class="language-ruby">xero_client.set_token_set(user.token_set)
 
-xeroTenantId = 'xeroTenantId_example'
-payRunID = '38400000-8cf0-11bd-b23e-10b96e4ef00d'
+xero_tenant_id = 'xeroTenantId_example'
+pay_run_id = '38400000-8cf0-11bd-b23e-10b96e4ef00d'
 
 begin
-  response = xero_client.accounting_api.get_pay_run(xeroTenantId, payRunID)
+  response = xero_client.accounting_api.get_pay_run(xero_tenant_id, pay_run_id)
   return response
 rescue XeroRuby::ApiError => e
   puts "Exception when calling get_pay_run: #{e}"
@@ -10341,11 +10341,11 @@ <h3>Usage and SDK Samples</h3>
                     <div class="tab-pane" id="examples-PayrollUk-getPayRunCalendar-0-ruby">
                       <pre class="prettyprint"><code class="language-ruby">xero_client.set_token_set(user.token_set)
 
-xeroTenantId = 'xeroTenantId_example'
-payRunCalendarID = '38400000-8cf0-11bd-b23e-10b96e4ef00d'
+xero_tenant_id = 'xeroTenantId_example'
+pay_run_calendar_id = '38400000-8cf0-11bd-b23e-10b96e4ef00d'
 
 begin
-  response = xero_client.accounting_api.get_pay_run_calendar(xeroTenantId, payRunCalendarID)
+  response = xero_client.accounting_api.get_pay_run_calendar(xero_tenant_id, pay_run_calendar_id)
   return response
 rescue XeroRuby::ApiError => e
   puts "Exception when calling get_pay_run_calendar: #{e}"
@@ -10459,11 +10459,11 @@ <h3>Usage and SDK Samples</h3>
                     <div class="tab-pane" id="examples-PayrollUk-getPayRunCalendars-0-ruby">
                       <pre class="prettyprint"><code class="language-ruby">xero_client.set_token_set(user.token_set)
 
-xeroTenantId = 'xeroTenantId_example'
+xero_tenant_id = 'xeroTenantId_example'
 page = 56
 
 begin
-  response = xero_client.accounting_api.get_pay_run_calendars(xeroTenantId, page)
+  response = xero_client.accounting_api.get_pay_run_calendars(xero_tenant_id, page)
   return response
 rescue XeroRuby::ApiError => e
   puts "Exception when calling get_pay_run_calendars: #{e}"
@@ -10571,12 +10571,12 @@ <h3>Usage and SDK Samples</h3>
                     <div class="tab-pane" id="examples-PayrollUk-getPayRuns-0-ruby">
                       <pre class="prettyprint"><code class="language-ruby">xero_client.set_token_set(user.token_set)
 
-xeroTenantId = 'xeroTenantId_example'
+xero_tenant_id = 'xeroTenantId_example'
 page = 56
 status = 'status_example'
 
 begin
-  response = xero_client.accounting_api.get_pay_runs(xeroTenantId, page, status)
+  response = xero_client.accounting_api.get_pay_runs(xero_tenant_id, page, status)
   return response
 rescue XeroRuby::ApiError => e
   puts "Exception when calling get_pay_runs: #{e}"
@@ -10704,11 +10704,11 @@ <h3>Usage and SDK Samples</h3>
                     <div class="tab-pane" id="examples-PayrollUk-getPaySlip-0-ruby">
                       <pre class="prettyprint"><code class="language-ruby">xero_client.set_token_set(user.token_set)
 
-xeroTenantId = 'xeroTenantId_example'
-payslipID = '38400000-8cf0-11bd-b23e-10b96e4ef00d'
+xero_tenant_id = 'xeroTenantId_example'
+payslip_id = '38400000-8cf0-11bd-b23e-10b96e4ef00d'
 
 begin
-  response = xero_client.accounting_api.get_pay_slip(xeroTenantId, payslipID)
+  response = xero_client.accounting_api.get_pay_slip(xero_tenant_id, payslip_id)
   return response
 rescue XeroRuby::ApiError => e
   puts "Exception when calling get_pay_slip: #{e}"
@@ -10822,12 +10822,12 @@ <h3>Usage and SDK Samples</h3>
                     <div class="tab-pane" id="examples-PayrollUk-getPaySlips-0-ruby">
                       <pre class="prettyprint"><code class="language-ruby">xero_client.set_token_set(user.token_set)
 
-xeroTenantId = 'xeroTenantId_example'
-payRunID = '38400000-8cf0-11bd-b23e-10b96e4ef00d'
+xero_tenant_id = 'xeroTenantId_example'
+pay_run_id = '38400000-8cf0-11bd-b23e-10b96e4ef00d'
 page = 56
 
 begin
-  response = xero_client.accounting_api.get_pay_slips(xeroTenantId, payRunID, page)
+  response = xero_client.accounting_api.get_pay_slips(xero_tenant_id, pay_run_id, page)
   return response
 rescue XeroRuby::ApiError => e
   puts "Exception when calling get_pay_slips: #{e}"
@@ -10961,11 +10961,11 @@ <h3>Usage and SDK Samples</h3>
                     <div class="tab-pane" id="examples-PayrollUk-getReimbursement-0-ruby">
                       <pre class="prettyprint"><code class="language-ruby">xero_client.set_token_set(user.token_set)
 
-xeroTenantId = 'xeroTenantId_example'
-reimbursementID = '38400000-8cf0-11bd-b23e-10b96e4ef00d'
+xero_tenant_id = 'xeroTenantId_example'
+reimbursement_id = '38400000-8cf0-11bd-b23e-10b96e4ef00d'
 
 begin
-  response = xero_client.accounting_api.get_reimbursement(xeroTenantId, reimbursementID)
+  response = xero_client.accounting_api.get_reimbursement(xero_tenant_id, reimbursement_id)
   return response
 rescue XeroRuby::ApiError => e
   puts "Exception when calling get_reimbursement: #{e}"
@@ -11079,11 +11079,11 @@ <h3>Usage and SDK Samples</h3>
                     <div class="tab-pane" id="examples-PayrollUk-getReimbursements-0-ruby">
                       <pre class="prettyprint"><code class="language-ruby">xero_client.set_token_set(user.token_set)
 
-xeroTenantId = 'xeroTenantId_example'
+xero_tenant_id = 'xeroTenantId_example'
 page = 56
 
 begin
-  response = xero_client.accounting_api.get_reimbursements(xeroTenantId, page)
+  response = xero_client.accounting_api.get_reimbursements(xero_tenant_id, page)
   return response
 rescue XeroRuby::ApiError => e
   puts "Exception when calling get_reimbursements: #{e}"
@@ -11191,10 +11191,10 @@ <h3>Usage and SDK Samples</h3>
                     <div class="tab-pane" id="examples-PayrollUk-getSettings-0-ruby">
                       <pre class="prettyprint"><code class="language-ruby">xero_client.set_token_set(user.token_set)
 
-xeroTenantId = 'xeroTenantId_example'
+xero_tenant_id = 'xeroTenantId_example'
 
 begin
-  response = xero_client.accounting_api.get_settings(xeroTenantId)
+  response = xero_client.accounting_api.get_settings(xero_tenant_id)
   return response
 rescue XeroRuby::ApiError => e
   puts "Exception when calling get_settings: #{e}"
@@ -11275,12 +11275,12 @@ <h3>Usage and SDK Samples</h3>
                     <div class="tab-pane" id="examples-PayrollUk-getStatutoryLeaveSummary-0-ruby">
                       <pre class="prettyprint"><code class="language-ruby">xero_client.set_token_set(user.token_set)
 
-xeroTenantId = 'xeroTenantId_example'
-employeeID = '4ff1e5cc-9835-40d5-bb18-09fdb118db9c'
-activeOnly = true
+xero_tenant_id = 'xeroTenantId_example'
+employee_id = '4ff1e5cc-9835-40d5-bb18-09fdb118db9c'
+active_only = true
 
 begin
-  response = xero_client.accounting_api.get_statutory_leave_summary(xeroTenantId, employeeID, activeOnly)
+  response = xero_client.accounting_api.get_statutory_leave_summary(xero_tenant_id, employee_id, active_only)
   return response
 rescue XeroRuby::ApiError => e
   puts "Exception when calling get_statutory_leave_summary: #{e}"
@@ -11421,11 +11421,11 @@ <h3>Usage and SDK Samples</h3>
                     <div class="tab-pane" id="examples-PayrollUk-getTimesheet-0-ruby">
                       <pre class="prettyprint"><code class="language-ruby">xero_client.set_token_set(user.token_set)
 
-xeroTenantId = 'xeroTenantId_example'
-timesheetID = '38400000-8cf0-11bd-b23e-10b96e4ef00d'
+xero_tenant_id = 'xeroTenantId_example'
+timesheet_id = '38400000-8cf0-11bd-b23e-10b96e4ef00d'
 
 begin
-  response = xero_client.accounting_api.get_timesheet(xeroTenantId, timesheetID)
+  response = xero_client.accounting_api.get_timesheet(xero_tenant_id, timesheet_id)
   return response
 rescue XeroRuby::ApiError => e
   puts "Exception when calling get_timesheet: #{e}"
@@ -11539,16 +11539,16 @@ <h3>Usage and SDK Samples</h3>
                     <div class="tab-pane" id="examples-PayrollUk-getTimesheets-0-ruby">
                       <pre class="prettyprint"><code class="language-ruby">xero_client.set_token_set(user.token_set)
 
-xeroTenantId = 'xeroTenantId_example'
+xero_tenant_id = 'xeroTenantId_example'
 page = 5
 filter = 'employeeId==00000000-0000-0000-0000-000000000000,payrollCalendarId==00000000-0000-0000-0000-000000000000'
 status = 'Draft'
-startDate = '2019-01-02'
-endDate = '2020-01-02'
+start_date = '2019-01-02'
+end_date = '2020-01-02'
 sort = 'startDate'
 
 begin
-  response = xero_client.accounting_api.get_timesheets(xeroTenantId, page, filter, status, startDate, endDate, sort)
+  response = xero_client.accounting_api.get_timesheets(xero_tenant_id, page, filter, status, start_date, end_date, sort)
   return response
 rescue XeroRuby::ApiError => e
   puts "Exception when calling get_timesheets: #{e}"
@@ -11756,10 +11756,10 @@ <h3>Usage and SDK Samples</h3>
                     <div class="tab-pane" id="examples-PayrollUk-getTrackingCategories-0-ruby">
                       <pre class="prettyprint"><code class="language-ruby">xero_client.set_token_set(user.token_set)
 
-xeroTenantId = 'xeroTenantId_example'
+xero_tenant_id = 'xeroTenantId_example'
 
 begin
-  response = xero_client.accounting_api.get_tracking_categories(xeroTenantId)
+  response = xero_client.accounting_api.get_tracking_categories(xero_tenant_id)
   return response
 rescue XeroRuby::ApiError => e
   puts "Exception when calling get_tracking_categories: #{e}"
@@ -11840,11 +11840,11 @@ <h3>Usage and SDK Samples</h3>
                     <div class="tab-pane" id="examples-PayrollUk-revertTimesheet-0-ruby">
                       <pre class="prettyprint"><code class="language-ruby">xero_client.set_token_set(user.token_set)
 
-xeroTenantId = 'xeroTenantId_example'
-timesheetID = '38400000-8cf0-11bd-b23e-10b96e4ef00d'
+xero_tenant_id = 'xeroTenantId_example'
+timesheet_id = '38400000-8cf0-11bd-b23e-10b96e4ef00d'
 
 begin
-  response = xero_client.accounting_api.revert_timesheet(xeroTenantId, timesheetID)
+  response = xero_client.accounting_api.revert_timesheet(xero_tenant_id, timesheet_id)
   return response
 rescue XeroRuby::ApiError => e
   puts "Exception when calling revert_timesheet: #{e}"
@@ -11953,8 +11953,8 @@ <h3>Usage and SDK Samples</h3>
                     <div class="tab-pane" id="examples-PayrollUk-updateEmployee-0-ruby">
                       <pre class="prettyprint"><code class="language-ruby">xero_client.set_token_set(user.token_set)
 
-xeroTenantId = 'xeroTenantId_example'
-employeeID = '4ff1e5cc-9835-40d5-bb18-09fdb118db9c'
+xero_tenant_id = 'xeroTenantId_example'
+employee_id = '4ff1e5cc-9835-40d5-bb18-09fdb118db9c'
 date_of_birth = 'YYYY-MM-DD'
 
 address = { 
@@ -11972,7 +11972,7 @@ <h3>Usage and SDK Samples</h3>
 }  
 
 begin
-  response = xero_client.accounting_api.update_employee(xeroTenantId, employeeID, employee)
+  response = xero_client.accounting_api.update_employee(xero_tenant_id, employee_id, employee)
   return response
 rescue XeroRuby::ApiError => e
   puts "Exception when calling update_employee: #{e}"
@@ -12117,9 +12117,9 @@ <h3>Usage and SDK Samples</h3>
                     <div class="tab-pane" id="examples-PayrollUk-updateEmployeeEarningsTemplate-0-ruby">
                       <pre class="prettyprint"><code class="language-ruby">xero_client.set_token_set(user.token_set)
 
-xeroTenantId = 'xeroTenantId_example'
-employeeID = '4ff1e5cc-9835-40d5-bb18-09fdb118db9c'
-payTemplateEarningID = '3fa85f64-5717-4562-b3fc-2c963f66afa6'
+xero_tenant_id = 'xeroTenantId_example'
+employee_id = '4ff1e5cc-9835-40d5-bb18-09fdb118db9c'
+pay_template_earning_id = '3fa85f64-5717-4562-b3fc-2c963f66afa6'
 
 earnings_template = { 
   pay_template_earning_id: "00000000-0000-0000-0000-000000000000",
@@ -12133,7 +12133,7 @@ <h3>Usage and SDK Samples</h3>
 earnings_templates << earnings_template
 
 begin
-  response = xero_client.accounting_api.update_employee_earnings_template(xeroTenantId, employeeID, payTemplateEarningID, earningsTemplate)
+  response = xero_client.accounting_api.update_employee_earnings_template(xero_tenant_id, employee_id, pay_template_earning_id, earningsTemplate)
   return response
 rescue XeroRuby::ApiError => e
   puts "Exception when calling update_employee_earnings_template: #{e}"
@@ -12304,9 +12304,9 @@ <h3>Usage and SDK Samples</h3>
                     <div class="tab-pane" id="examples-PayrollUk-updateEmployeeLeave-0-ruby">
                       <pre class="prettyprint"><code class="language-ruby">xero_client.set_token_set(user.token_set)
 
-xeroTenantId = 'xeroTenantId_example'
-employeeID = '4ff1e5cc-9835-40d5-bb18-09fdb118db9c'
-leaveID = 'c4be24e5-e840-4c92-9eaa-2d86cd596314'
+xero_tenant_id = 'xeroTenantId_example'
+employee_id = '4ff1e5cc-9835-40d5-bb18-09fdb118db9c'
+leave_id = 'c4be24e5-e840-4c92-9eaa-2d86cd596314'
 start_date = 'YYYY-MM-DD'
 end_date = 'YYYY-MM-DD'
 
@@ -12317,7 +12317,7 @@ <h3>Usage and SDK Samples</h3>
 }  
 
 begin
-  response = xero_client.accounting_api.update_employee_leave(xeroTenantId, employeeID, leaveID, employeeLeave)
+  response = xero_client.accounting_api.update_employee_leave(xero_tenant_id, employee_id, leave_id, employeeLeave)
   return response
 rescue XeroRuby::ApiError => e
   puts "Exception when calling update_employee_leave: #{e}"
@@ -12488,8 +12488,8 @@ <h3>Usage and SDK Samples</h3>
                     <div class="tab-pane" id="examples-PayrollUk-updateEmployeeOpeningBalances-0-ruby">
                       <pre class="prettyprint"><code class="language-ruby">xero_client.set_token_set(user.token_set)
 
-xeroTenantId = 'xeroTenantId_example'
-employeeID = '4ff1e5cc-9835-40d5-bb18-09fdb118db9c'
+xero_tenant_id = 'xeroTenantId_example'
+employee_id = '4ff1e5cc-9835-40d5-bb18-09fdb118db9c'
 
 employee_opening_balances = { 
   statutory_maternity_pay: 0.0,
@@ -12500,7 +12500,7 @@ <h3>Usage and SDK Samples</h3>
 }  
 
 begin
-  response = xero_client.accounting_api.update_employee_opening_balances(xeroTenantId, employeeID, employeeOpeningBalances)
+  response = xero_client.accounting_api.update_employee_opening_balances(xero_tenant_id, employee_id, employeeOpeningBalances)
   return response
 rescue XeroRuby::ApiError => e
   puts "Exception when calling update_employee_opening_balances: #{e}"
@@ -12645,9 +12645,9 @@ <h3>Usage and SDK Samples</h3>
                     <div class="tab-pane" id="examples-PayrollUk-updateEmployeeSalaryAndWage-0-ruby">
                       <pre class="prettyprint"><code class="language-ruby">xero_client.set_token_set(user.token_set)
 
-xeroTenantId = 'xeroTenantId_example'
-employeeID = '4ff1e5cc-9835-40d5-bb18-09fdb118db9c'
-salaryAndWagesID = '3fa85f64-5717-4562-b3fc-2c963f66afa6'
+xero_tenant_id = 'xeroTenantId_example'
+employee_id = '4ff1e5cc-9835-40d5-bb18-09fdb118db9c'
+salary_and_wages_id = '3fa85f64-5717-4562-b3fc-2c963f66afa6'
 
 salary_and_wage = { 
   earnings_rate_id: "00000000-0000-0000-0000-000000000000",
@@ -12658,7 +12658,7 @@ <h3>Usage and SDK Samples</h3>
 }  
 
 begin
-  response = xero_client.accounting_api.update_employee_salary_and_wage(xeroTenantId, employeeID, salaryAndWagesID, salaryAndWage)
+  response = xero_client.accounting_api.update_employee_salary_and_wage(xero_tenant_id, employee_id, salary_and_wages_id, salaryAndWage)
   return response
 rescue XeroRuby::ApiError => e
   puts "Exception when calling update_employee_salary_and_wage: #{e}"
@@ -12829,8 +12829,8 @@ <h3>Usage and SDK Samples</h3>
                     <div class="tab-pane" id="examples-PayrollUk-updatePayRun-0-ruby">
                       <pre class="prettyprint"><code class="language-ruby">xero_client.set_token_set(user.token_set)
 
-xeroTenantId = 'xeroTenantId_example'
-payRunID = '38400000-8cf0-11bd-b23e-10b96e4ef00d'
+xero_tenant_id = 'xeroTenantId_example'
+pay_run_id = '38400000-8cf0-11bd-b23e-10b96e4ef00d'
 start_date = 'YYYY-MM-DD'
 payment_date = 'YYYY-MM-DD'
 
@@ -12841,7 +12841,7 @@ <h3>Usage and SDK Samples</h3>
 }  
 
 begin
-  response = xero_client.accounting_api.update_pay_run(xeroTenantId, payRunID, payRun)
+  response = xero_client.accounting_api.update_pay_run(xero_tenant_id, pay_run_id, payRun)
   return response
 rescue XeroRuby::ApiError => e
   puts "Exception when calling update_pay_run: #{e}"
@@ -12986,9 +12986,9 @@ <h3>Usage and SDK Samples</h3>
                     <div class="tab-pane" id="examples-PayrollUk-updateTimesheetLine-0-ruby">
                       <pre class="prettyprint"><code class="language-ruby">xero_client.set_token_set(user.token_set)
 
-xeroTenantId = 'xeroTenantId_example'
-timesheetID = '38400000-8cf0-11bd-b23e-10b96e4ef00d'
-timesheetLineID = '38400000-8cf0-11bd-b23e-10b96e4ef00d'
+xero_tenant_id = 'xeroTenantId_example'
+timesheet_id = '38400000-8cf0-11bd-b23e-10b96e4ef00d'
+timesheet_line_id = '38400000-8cf0-11bd-b23e-10b96e4ef00d'
 date = 'YYYY-MM-DD'
 
 timesheet_line = { 
@@ -13000,7 +13000,7 @@ <h3>Usage and SDK Samples</h3>
 }  
 
 begin
-  response = xero_client.accounting_api.update_timesheet_line(xeroTenantId, timesheetID, timesheetLineID, timesheetLine)
+  response = xero_client.accounting_api.update_timesheet_line(xero_tenant_id, timesheet_id, timesheet_line_id, timesheetLine)
   return response
 rescue XeroRuby::ApiError => e
   puts "Exception when calling update_timesheet_line: #{e}"
diff --git a/docs/projects/index.html b/docs/projects/index.html
index bf6b0ca3..c6b4f384 100644
--- a/docs/projects/index.html
+++ b/docs/projects/index.html
@@ -1468,7 +1468,7 @@
           <nav id="scrollingNav">
             <ul class="sidenav nav nav-list">
               <li class="nav-header" data-group="Project"><strong>SDK: </strong><span id='sdk-name'></span></li>
-              <li class="nav-header" data-group="Project"><strong>VSN: </strong>3.7.1</li>
+              <li class="nav-header" data-group="Project"><strong>VSN: </strong>3.8.0</li>
               <li class="nav-header" data-group="Project"><a href="#api-Project">Methods</a></li>
               <li data-group="Project" data-name="createProject" class="">
                 <a href="#api-Project-createProject">createProject</a>
@@ -1552,10 +1552,10 @@ <h3>Usage and SDK Samples</h3>
                     <div class="tab-pane" id="examples-Project-createProject-0-ruby">
                       <pre class="prettyprint"><code class="language-ruby">xero_client.set_token_set(user.token_set)
 
-xeroTenantId = 'xeroTenantId_example'
+xero_tenant_id = 'xeroTenantId_example'
 
 begin
-  response = xero_client.accounting_api.create_project(xeroTenantId, projectCreateOrUpdate)
+  response = xero_client.accounting_api.create_project(xero_tenant_id, projectCreateOrUpdate)
   return response
 rescue XeroRuby::ApiError => e
   puts "Exception when calling create_project: #{e}"
@@ -1668,11 +1668,11 @@ <h3>Usage and SDK Samples</h3>
                     <div class="tab-pane" id="examples-Project-createTimeEntry-0-ruby">
                       <pre class="prettyprint"><code class="language-ruby">xero_client.set_token_set(user.token_set)
 
-xeroTenantId = 'xeroTenantId_example'
-projectId = '38400000-8cf0-11bd-b23e-10b96e4ef00d'
+xero_tenant_id = 'xeroTenantId_example'
+project_id = '38400000-8cf0-11bd-b23e-10b96e4ef00d'
 
 begin
-  response = xero_client.accounting_api.create_time_entry(xeroTenantId, projectId, timeEntryCreateOrUpdate)
+  response = xero_client.accounting_api.create_time_entry(xero_tenant_id, project_id, timeEntryCreateOrUpdate)
   return response
 rescue XeroRuby::ApiError => e
   puts "Exception when calling create_time_entry: #{e}"
@@ -1818,12 +1818,12 @@ <h3>Usage and SDK Samples</h3>
                     <div class="tab-pane" id="examples-Project-deleteTimeEntry-0-ruby">
                       <pre class="prettyprint"><code class="language-ruby">xero_client.set_token_set(user.token_set)
 
-xeroTenantId = 'xeroTenantId_example'
-projectId = '38400000-8cf0-11bd-b23e-10b96e4ef00d'
-timeEntryId = '38400000-8cf0-11bd-b23e-10b96e4ef00d'
+xero_tenant_id = 'xeroTenantId_example'
+project_id = '38400000-8cf0-11bd-b23e-10b96e4ef00d'
+time_entry_id = '38400000-8cf0-11bd-b23e-10b96e4ef00d'
 
 begin
-  response = xero_client.accounting_api.delete_time_entry(xeroTenantId, projectId, timeEntryId)
+  response = xero_client.accounting_api.delete_time_entry(xero_tenant_id, project_id, time_entry_id)
   return response
 rescue XeroRuby::ApiError => e
   puts "Exception when calling delete_time_entry: #{e}"
@@ -1958,11 +1958,11 @@ <h3>Usage and SDK Samples</h3>
                     <div class="tab-pane" id="examples-Project-getProject-0-ruby">
                       <pre class="prettyprint"><code class="language-ruby">xero_client.set_token_set(user.token_set)
 
-xeroTenantId = 'xeroTenantId_example'
-projectId = '38400000-8cf0-11bd-b23e-10b96e4ef00d'
+xero_tenant_id = 'xeroTenantId_example'
+project_id = '38400000-8cf0-11bd-b23e-10b96e4ef00d'
 
 begin
-  response = xero_client.accounting_api.get_project(xeroTenantId, projectId)
+  response = xero_client.accounting_api.get_project(xero_tenant_id, project_id)
   return response
 rescue XeroRuby::ApiError => e
   puts "Exception when calling get_project: #{e}"
@@ -2076,12 +2076,12 @@ <h3>Usage and SDK Samples</h3>
                     <div class="tab-pane" id="examples-Project-getProjectUsers-0-ruby">
                       <pre class="prettyprint"><code class="language-ruby">xero_client.set_token_set(user.token_set)
 
-xeroTenantId = 'xeroTenantId_example'
+xero_tenant_id = 'xeroTenantId_example'
 page = 1
-pageSize = 100
+page_size = 100
 
 begin
-  response = xero_client.accounting_api.get_project_users(xeroTenantId, page, pageSize)
+  response = xero_client.accounting_api.get_project_users(xero_tenant_id, page, page_size)
   return response
 rescue XeroRuby::ApiError => e
   puts "Exception when calling get_project_users: #{e}"
@@ -2209,15 +2209,15 @@ <h3>Usage and SDK Samples</h3>
                     <div class="tab-pane" id="examples-Project-getProjects-0-ruby">
                       <pre class="prettyprint"><code class="language-ruby">xero_client.set_token_set(user.token_set)
 
-xeroTenantId = 'xeroTenantId_example'
-projectIds = []
-contactID = '38400000-8cf0-11bd-b23e-10b96e4ef00d'
+xero_tenant_id = 'xeroTenantId_example'
+project_ids = []
+contact_id = '38400000-8cf0-11bd-b23e-10b96e4ef00d'
 states = 'states_example'
 page = 1
-pageSize = 100
+page_size = 100
 
 begin
-  response = xero_client.accounting_api.get_projects(xeroTenantId, projectIds, contactID, states, page, pageSize)
+  response = xero_client.accounting_api.get_projects(xero_tenant_id, project_ids, contact_id, states, page, page_size)
   return response
 rescue XeroRuby::ApiError => e
   puts "Exception when calling get_projects: #{e}"
@@ -2411,12 +2411,12 @@ <h3>Usage and SDK Samples</h3>
                     <div class="tab-pane" id="examples-Project-getTask-0-ruby">
                       <pre class="prettyprint"><code class="language-ruby">xero_client.set_token_set(user.token_set)
 
-xeroTenantId = 'xeroTenantId_example'
-projectId = '38400000-8cf0-11bd-b23e-10b96e4ef00d'
-taskId = '38400000-8cf0-11bd-b23e-10b96e4ef00d'
+xero_tenant_id = 'xeroTenantId_example'
+project_id = '38400000-8cf0-11bd-b23e-10b96e4ef00d'
+task_id = '38400000-8cf0-11bd-b23e-10b96e4ef00d'
 
 begin
-  response = xero_client.accounting_api.get_task(xeroTenantId, projectId, taskId)
+  response = xero_client.accounting_api.get_task(xero_tenant_id, project_id, task_id)
   return response
 rescue XeroRuby::ApiError => e
   puts "Exception when calling get_task: #{e}"
@@ -2556,15 +2556,15 @@ <h3>Usage and SDK Samples</h3>
                     <div class="tab-pane" id="examples-Project-getTasks-0-ruby">
                       <pre class="prettyprint"><code class="language-ruby">xero_client.set_token_set(user.token_set)
 
-xeroTenantId = 'xeroTenantId_example'
-projectId = '38400000-8cf0-11bd-b23e-10b96e4ef00d'
+xero_tenant_id = 'xeroTenantId_example'
+project_id = '38400000-8cf0-11bd-b23e-10b96e4ef00d'
 page = 1
-pageSize = 10
-taskIds = 'taskIds_example'
-chargeType = 
+page_size = 10
+task_ids = 'taskIds_example'
+charge_type = 
 
 begin
-  response = xero_client.accounting_api.get_tasks(xeroTenantId, projectId, page, pageSize, taskIds, chargeType)
+  response = xero_client.accounting_api.get_tasks(xero_tenant_id, project_id, page, page_size, task_ids, charge_type)
   return response
 rescue XeroRuby::ApiError => e
   puts "Exception when calling get_tasks: #{e}"
@@ -2765,21 +2765,21 @@ <h3>Usage and SDK Samples</h3>
                     <div class="tab-pane" id="examples-Project-getTimeEntries-0-ruby">
                       <pre class="prettyprint"><code class="language-ruby">xero_client.set_token_set(user.token_set)
 
-xeroTenantId = 'xeroTenantId_example'
-projectId = '38400000-8cf0-11bd-b23e-10b96e4ef00d'
-userId = '38400000-8cf0-11bd-b23e-10b96e4ef00d'
-taskId = '38400000-8cf0-11bd-b23e-10b96e4ef00d'
-invoiceId = '38400000-8cf0-11bd-b23e-10b96e4ef00d'
-contactId = '38400000-8cf0-11bd-b23e-10b96e4ef00d'
+xero_tenant_id = 'xeroTenantId_example'
+project_id = '38400000-8cf0-11bd-b23e-10b96e4ef00d'
+user_id = '38400000-8cf0-11bd-b23e-10b96e4ef00d'
+task_id = '38400000-8cf0-11bd-b23e-10b96e4ef00d'
+invoice_id = '38400000-8cf0-11bd-b23e-10b96e4ef00d'
+contact_id = '38400000-8cf0-11bd-b23e-10b96e4ef00d'
 page = 1
-pageSize = 10
+page_size = 10
 states = []
-isChargeable = true
-dateAfterUtc = "2013-10-20T19:20:30+01:00"
-dateBeforeUtc = "2013-10-20T19:20:30+01:00"
+is_chargeable = true
+date_after_utc = "2013-10-20T19:20:30+01:00"
+date_before_utc = "2013-10-20T19:20:30+01:00"
 
 begin
-  response = xero_client.accounting_api.get_time_entries(xeroTenantId, projectId, userId, taskId, invoiceId, contactId, page, pageSize, states, isChargeable, dateAfterUtc, dateBeforeUtc)
+  response = xero_client.accounting_api.get_time_entries(xero_tenant_id, project_id, user_id, task_id, invoice_id, contact_id, page, page_size, states, is_chargeable, date_after_utc, date_before_utc)
   return response
 rescue XeroRuby::ApiError => e
   puts "Exception when calling get_time_entries: #{e}"
@@ -3118,12 +3118,12 @@ <h3>Usage and SDK Samples</h3>
                     <div class="tab-pane" id="examples-Project-getTimeEntry-0-ruby">
                       <pre class="prettyprint"><code class="language-ruby">xero_client.set_token_set(user.token_set)
 
-xeroTenantId = 'xeroTenantId_example'
-projectId = '38400000-8cf0-11bd-b23e-10b96e4ef00d'
-timeEntryId = '38400000-8cf0-11bd-b23e-10b96e4ef00d'
+xero_tenant_id = 'xeroTenantId_example'
+project_id = '38400000-8cf0-11bd-b23e-10b96e4ef00d'
+time_entry_id = '38400000-8cf0-11bd-b23e-10b96e4ef00d'
 
 begin
-  response = xero_client.accounting_api.get_time_entry(xeroTenantId, projectId, timeEntryId)
+  response = xero_client.accounting_api.get_time_entry(xero_tenant_id, project_id, time_entry_id)
   return response
 rescue XeroRuby::ApiError => e
   puts "Exception when calling get_time_entry: #{e}"
@@ -3263,11 +3263,11 @@ <h3>Usage and SDK Samples</h3>
                     <div class="tab-pane" id="examples-Project-patchProject-0-ruby">
                       <pre class="prettyprint"><code class="language-ruby">xero_client.set_token_set(user.token_set)
 
-xeroTenantId = 'xeroTenantId_example'
-projectId = '38400000-8cf0-11bd-b23e-10b96e4ef00d'
+xero_tenant_id = 'xeroTenantId_example'
+project_id = '38400000-8cf0-11bd-b23e-10b96e4ef00d'
 
 begin
-  response = xero_client.accounting_api.patch_project(xeroTenantId, projectId, projectPatch)
+  response = xero_client.accounting_api.patch_project(xero_tenant_id, project_id, projectPatch)
   return response
 rescue XeroRuby::ApiError => e
   puts "Exception when calling patch_project: #{e}"
@@ -3413,11 +3413,11 @@ <h3>Usage and SDK Samples</h3>
                     <div class="tab-pane" id="examples-Project-updateProject-0-ruby">
                       <pre class="prettyprint"><code class="language-ruby">xero_client.set_token_set(user.token_set)
 
-xeroTenantId = 'xeroTenantId_example'
-projectId = '38400000-8cf0-11bd-b23e-10b96e4ef00d'
+xero_tenant_id = 'xeroTenantId_example'
+project_id = '38400000-8cf0-11bd-b23e-10b96e4ef00d'
 
 begin
-  response = xero_client.accounting_api.update_project(xeroTenantId, projectId, projectCreateOrUpdate)
+  response = xero_client.accounting_api.update_project(xero_tenant_id, project_id, projectCreateOrUpdate)
   return response
 rescue XeroRuby::ApiError => e
   puts "Exception when calling update_project: #{e}"
@@ -3563,12 +3563,12 @@ <h3>Usage and SDK Samples</h3>
                     <div class="tab-pane" id="examples-Project-updateTimeEntry-0-ruby">
                       <pre class="prettyprint"><code class="language-ruby">xero_client.set_token_set(user.token_set)
 
-xeroTenantId = 'xeroTenantId_example'
-projectId = '38400000-8cf0-11bd-b23e-10b96e4ef00d'
-timeEntryId = '38400000-8cf0-11bd-b23e-10b96e4ef00d'
+xero_tenant_id = 'xeroTenantId_example'
+project_id = '38400000-8cf0-11bd-b23e-10b96e4ef00d'
+time_entry_id = '38400000-8cf0-11bd-b23e-10b96e4ef00d'
 
 begin
-  response = xero_client.accounting_api.update_time_entry(xeroTenantId, projectId, timeEntryId, timeEntryCreateOrUpdate)
+  response = xero_client.accounting_api.update_time_entry(xero_tenant_id, project_id, time_entry_id, timeEntryCreateOrUpdate)
   return response
 rescue XeroRuby::ApiError => e
   puts "Exception when calling update_time_entry: #{e}"
diff --git a/lib/xero-ruby/models/app_store/product.rb b/lib/xero-ruby/models/app_store/product.rb
index 4d98d744..66738f63 100644
--- a/lib/xero-ruby/models/app_store/product.rb
+++ b/lib/xero-ruby/models/app_store/product.rb
@@ -22,13 +22,17 @@ class Product
     # The name of the product
     attr_accessor :name
     
-    # The pricing model of the product: * FIXED: Customers are charged a fixed amount for each billing period * PER_SEAT: Customers are charged based on the number of units they purchase 
+    # The unit of the per seat product. e.g. \"user\", \"organisation\", \"SMS\", etc
+    attr_accessor :seat_unit
+    
+    # The pricing model of the product: * FIXED: Customers are charged a fixed amount for each billing period * PER_SEAT: Customers are charged based on the number of units they purchase * METERED: Customers are charged per use of this product 
     attr_accessor :type
     FIXED ||= "FIXED".freeze
     PER_SEAT ||= "PER_SEAT".freeze
+    METERED ||= "METERED".freeze
     
-    # The unit of the per seat product. e.g. \"user\", \"organisation\", \"SMS\", etc
-    attr_accessor :seat_unit
+    # The unit of the usage product. e.g. \"user\", \"minutes\", \"SMS\", etc
+    attr_accessor :usage_unit
     
     class EnumAttributeValidator
       attr_reader :datatype
@@ -57,8 +61,9 @@ def self.attribute_map
       {
         :'id' => :'id',
         :'name' => :'name',
+        :'seat_unit' => :'seatUnit',
         :'type' => :'type',
-        :'seat_unit' => :'seatUnit'
+        :'usage_unit' => :'usageUnit'
       }
     end
 
@@ -67,8 +72,9 @@ def self.openapi_types
       {
         :'id' => :'String',
         :'name' => :'String',
+        :'seat_unit' => :'String',
         :'type' => :'String',
-        :'seat_unit' => :'String'
+        :'usage_unit' => :'String'
       }
     end
 
@@ -95,12 +101,16 @@ def initialize(attributes = {})
         self.name = attributes[:'name']
       end
 
+      if attributes.key?(:'seat_unit')
+        self.seat_unit = attributes[:'seat_unit']
+      end
+
       if attributes.key?(:'type')
         self.type = attributes[:'type']
       end
 
-      if attributes.key?(:'seat_unit')
-        self.seat_unit = attributes[:'seat_unit']
+      if attributes.key?(:'usage_unit')
+        self.usage_unit = attributes[:'usage_unit']
       end
     end
 
@@ -114,7 +124,7 @@ def list_invalid_properties
     # Check to see if the all the properties in the model are valid
     # @return true if the model is valid
     def valid?
-      type_validator = EnumAttributeValidator.new('String', ["FIXED", "PER_SEAT"])
+      type_validator = EnumAttributeValidator.new('String', ["FIXED", "PER_SEAT", "METERED"])
       return false unless type_validator.valid?(@type)
       true
     end
@@ -122,7 +132,7 @@ def valid?
     # Custom attribute writer method checking allowed values (enum).
     # @param [Object] type Object to be assigned
     def type=(type)
-      validator = EnumAttributeValidator.new('String', ["FIXED", "PER_SEAT"])
+      validator = EnumAttributeValidator.new('String', ["FIXED", "PER_SEAT", "METERED"])
       unless validator.valid?(type)
         fail ArgumentError, "invalid value for \"type\", must be one of #{validator.allowable_values}."
       end
@@ -136,8 +146,9 @@ def ==(o)
       self.class == o.class &&
           id == o.id &&
           name == o.name &&
+          seat_unit == o.seat_unit &&
           type == o.type &&
-          seat_unit == o.seat_unit
+          usage_unit == o.usage_unit
     end
 
     # @see the `==` method
@@ -149,7 +160,7 @@ def eql?(o)
     # Calculates hash code according to all attributes.
     # @return [Integer] Hash code
     def hash
-      [id, name, type, seat_unit].hash
+      [id, name, seat_unit, type, usage_unit].hash
     end
 
     # Builds the object from hash
diff --git a/lib/xero-ruby/models/app_store/subscription_item.rb b/lib/xero-ruby/models/app_store/subscription_item.rb
index 96ac4809..b3d20d25 100644
--- a/lib/xero-ruby/models/app_store/subscription_item.rb
+++ b/lib/xero-ruby/models/app_store/subscription_item.rb
@@ -28,6 +28,9 @@ class SubscriptionItem
 
     attr_accessor :product
     
+    # The quantity of the item. For a fixed product, it is 1. For a per-seat product, it is a positive integer. For metered products, it is always null.
+    attr_accessor :quantity
+    
     # Date the subscription started, or will start. Note: this could be in the future for downgrades or reduced number of seats that haven't taken effect yet. 
     attr_accessor :start_date
     
@@ -69,6 +72,7 @@ def self.attribute_map
         :'id' => :'id',
         :'price' => :'price',
         :'product' => :'product',
+        :'quantity' => :'quantity',
         :'start_date' => :'startDate',
         :'status' => :'status',
         :'test_mode' => :'testMode'
@@ -82,6 +86,7 @@ def self.openapi_types
         :'id' => :'String',
         :'price' => :'Price',
         :'product' => :'Product',
+        :'quantity' => :'Integer',
         :'start_date' => :'DateTime',
         :'status' => :'String',
         :'test_mode' => :'Boolean'
@@ -119,6 +124,10 @@ def initialize(attributes = {})
         self.product = attributes[:'product']
       end
 
+      if attributes.key?(:'quantity')
+        self.quantity = attributes[:'quantity']
+      end
+
       if attributes.key?(:'start_date')
         self.start_date = attributes[:'start_date']
       end
@@ -191,6 +200,7 @@ def ==(o)
           id == o.id &&
           price == o.price &&
           product == o.product &&
+          quantity == o.quantity &&
           start_date == o.start_date &&
           status == o.status &&
           test_mode == o.test_mode
@@ -205,7 +215,7 @@ def eql?(o)
     # Calculates hash code according to all attributes.
     # @return [Integer] Hash code
     def hash
-      [end_date, id, price, product, start_date, status, test_mode].hash
+      [end_date, id, price, product, quantity, start_date, status, test_mode].hash
     end
 
     # Builds the object from hash
diff --git a/lib/xero-ruby/models/payroll_uk/employment.rb b/lib/xero-ruby/models/payroll_uk/employment.rb
index 59661bf4..70ef8c06 100644
--- a/lib/xero-ruby/models/payroll_uk/employment.rb
+++ b/lib/xero-ruby/models/payroll_uk/employment.rb
@@ -30,11 +30,16 @@ class Employment
     A ||= "A".freeze
     B ||= "B".freeze
     C ||= "C".freeze
+    F ||= "F".freeze
     H ||= "H".freeze
+    I ||= "I".freeze
     J ||= "J".freeze
+    L ||= "L".freeze
     M ||= "M".freeze
-    Z ||= "Z".freeze
+    S ||= "S".freeze
+    V ||= "V".freeze
     X ||= "X".freeze
+    Z ||= "Z".freeze
     
     class EnumAttributeValidator
       attr_reader :datatype
@@ -120,7 +125,7 @@ def list_invalid_properties
     # Check to see if the all the properties in the model are valid
     # @return true if the model is valid
     def valid?
-      ni_category_validator = EnumAttributeValidator.new('String', ["A", "B", "C", "H", "J", "M", "Z", "X"])
+      ni_category_validator = EnumAttributeValidator.new('String', ["A", "B", "C", "F", "H", "I", "J", "L", "M", "S", "V", "X", "Z"])
       return false unless ni_category_validator.valid?(@ni_category)
       true
     end
@@ -128,7 +133,7 @@ def valid?
     # Custom attribute writer method checking allowed values (enum).
     # @param [Object] ni_category Object to be assigned
     def ni_category=(ni_category)
-      validator = EnumAttributeValidator.new('String', ["A", "B", "C", "H", "J", "M", "Z", "X"])
+      validator = EnumAttributeValidator.new('String', ["A", "B", "C", "F", "H", "I", "J", "L", "M", "S", "V", "X", "Z"])
       unless validator.valid?(ni_category)
         fail ArgumentError, "invalid value for \"ni_category\", must be one of #{validator.allowable_values}."
       end
diff --git a/lib/xero-ruby/version.rb b/lib/xero-ruby/version.rb
index 4dff1500..86b981de 100644
--- a/lib/xero-ruby/version.rb
+++ b/lib/xero-ruby/version.rb
@@ -7,9 +7,9 @@
 Generated by: https://openapi-generator.tech
 OpenAPI Generator version: 4.3.1
 
-The version of the XeroOpenAPI document: 2.19.3
+The version of the XeroOpenAPI document: 2.21.0
 =end
 
 module XeroRuby
-  VERSION = '3.7.1'
+  VERSION = '3.8.0'
 end