diff --git a/src/SDKs/CognitiveServices/management/Management.CognitiveServices/Generated/AccountsOperations.cs b/src/SDKs/CognitiveServices/management/Management.CognitiveServices/Generated/AccountsOperations.cs
index 07e127c80a455..ca7189f6debce 100644
--- a/src/SDKs/CognitiveServices/management/Management.CognitiveServices/Generated/AccountsOperations.cs
+++ b/src/SDKs/CognitiveServices/management/Management.CognitiveServices/Generated/AccountsOperations.cs
@@ -313,6 +313,9 @@ internal AccountsOperations(CognitiveServicesManagementClient client)
         /// have a key no greater than 128 characters and value no greater than 256
         /// characters.
         /// </param>
+        /// <param name='properties'>
+        /// Additional properties for Account. Only provided fileds will be updated.
+        /// </param>
         /// <param name='customHeaders'>
         /// Headers that will be added to request.
         /// </param>
@@ -334,7 +337,7 @@ internal AccountsOperations(CognitiveServicesManagementClient client)
         /// <return>
         /// A response object containing the response body and response headers.
         /// </return>
-        public async Task<AzureOperationResponse<CognitiveServicesAccount>> UpdateWithHttpMessagesAsync(string resourceGroupName, string accountName, Sku sku = default(Sku), IDictionary<string, string> tags = default(IDictionary<string, string>), Dictionary<string, List<string>> customHeaders = null, CancellationToken cancellationToken = default(CancellationToken))
+        public async Task<AzureOperationResponse<CognitiveServicesAccount>> UpdateWithHttpMessagesAsync(string resourceGroupName, string accountName, Sku sku = default(Sku), IDictionary<string, string> tags = default(IDictionary<string, string>), object properties = default(object), Dictionary<string, List<string>> customHeaders = null, CancellationToken cancellationToken = default(CancellationToken))
         {
             if (resourceGroupName == null)
             {
@@ -372,10 +375,11 @@ internal AccountsOperations(CognitiveServicesManagementClient client)
                 sku.Validate();
             }
             CognitiveServicesAccountUpdateParameters parameters = new CognitiveServicesAccountUpdateParameters();
-            if (sku != null || tags != null)
+            if (sku != null || tags != null || properties != null)
             {
                 parameters.Sku = sku;
                 parameters.Tags = tags;
+                parameters.Properties = properties;
             }
             // Tracing
             bool _shouldTrace = ServiceClientTracing.IsEnabled;
diff --git a/src/SDKs/CognitiveServices/management/Management.CognitiveServices/Generated/AccountsOperationsExtensions.cs b/src/SDKs/CognitiveServices/management/Management.CognitiveServices/Generated/AccountsOperationsExtensions.cs
index 42ad2feddc721..bd386335f1c68 100644
--- a/src/SDKs/CognitiveServices/management/Management.CognitiveServices/Generated/AccountsOperationsExtensions.cs
+++ b/src/SDKs/CognitiveServices/management/Management.CognitiveServices/Generated/AccountsOperationsExtensions.cs
@@ -95,9 +95,12 @@ public static CognitiveServicesAccount Create(this IAccountsOperations operation
             /// have a key no greater than 128 characters and value no greater than 256
             /// characters.
             /// </param>
-            public static CognitiveServicesAccount Update(this IAccountsOperations operations, string resourceGroupName, string accountName, Sku sku = default(Sku), IDictionary<string, string> tags = default(IDictionary<string, string>))
+            /// <param name='properties'>
+            /// Additional properties for Account. Only provided fileds will be updated.
+            /// </param>
+            public static CognitiveServicesAccount Update(this IAccountsOperations operations, string resourceGroupName, string accountName, Sku sku = default(Sku), IDictionary<string, string> tags = default(IDictionary<string, string>), object properties = default(object))
             {
-                return operations.UpdateAsync(resourceGroupName, accountName, sku, tags).GetAwaiter().GetResult();
+                return operations.UpdateAsync(resourceGroupName, accountName, sku, tags, properties).GetAwaiter().GetResult();
             }
 
             /// <summary>
@@ -122,12 +125,15 @@ public static CognitiveServicesAccount Create(this IAccountsOperations operation
             /// have a key no greater than 128 characters and value no greater than 256
             /// characters.
             /// </param>
+            /// <param name='properties'>
+            /// Additional properties for Account. Only provided fileds will be updated.
+            /// </param>
             /// <param name='cancellationToken'>
             /// The cancellation token.
             /// </param>
-            public static async Task<CognitiveServicesAccount> UpdateAsync(this IAccountsOperations operations, string resourceGroupName, string accountName, Sku sku = default(Sku), IDictionary<string, string> tags = default(IDictionary<string, string>), CancellationToken cancellationToken = default(CancellationToken))
+            public static async Task<CognitiveServicesAccount> UpdateAsync(this IAccountsOperations operations, string resourceGroupName, string accountName, Sku sku = default(Sku), IDictionary<string, string> tags = default(IDictionary<string, string>), object properties = default(object), CancellationToken cancellationToken = default(CancellationToken))
             {
-                using (var _result = await operations.UpdateWithHttpMessagesAsync(resourceGroupName, accountName, sku, tags, null, cancellationToken).ConfigureAwait(false))
+                using (var _result = await operations.UpdateWithHttpMessagesAsync(resourceGroupName, accountName, sku, tags, properties, null, cancellationToken).ConfigureAwait(false))
                 {
                     return _result.Body;
                 }
diff --git a/src/SDKs/CognitiveServices/management/Management.CognitiveServices/Generated/IAccountsOperations.cs b/src/SDKs/CognitiveServices/management/Management.CognitiveServices/Generated/IAccountsOperations.cs
index 9f106c3b8b20d..1a592939816fb 100644
--- a/src/SDKs/CognitiveServices/management/Management.CognitiveServices/Generated/IAccountsOperations.cs
+++ b/src/SDKs/CognitiveServices/management/Management.CognitiveServices/Generated/IAccountsOperations.cs
@@ -72,6 +72,10 @@ public partial interface IAccountsOperations
         /// a resource. Each tag must have a key no greater than 128 characters
         /// and value no greater than 256 characters.
         /// </param>
+        /// <param name='properties'>
+        /// Additional properties for Account. Only provided fileds will be
+        /// updated.
+        /// </param>
         /// <param name='customHeaders'>
         /// The headers that will be added to request.
         /// </param>
@@ -87,7 +91,7 @@ public partial interface IAccountsOperations
         /// <exception cref="Microsoft.Rest.ValidationException">
         /// Thrown when a required parameter is null
         /// </exception>
-        Task<AzureOperationResponse<CognitiveServicesAccount>> UpdateWithHttpMessagesAsync(string resourceGroupName, string accountName, Sku sku = default(Sku), IDictionary<string, string> tags = default(IDictionary<string, string>), Dictionary<string, List<string>> customHeaders = null, CancellationToken cancellationToken = default(CancellationToken));
+        Task<AzureOperationResponse<CognitiveServicesAccount>> UpdateWithHttpMessagesAsync(string resourceGroupName, string accountName, Sku sku = default(Sku), IDictionary<string, string> tags = default(IDictionary<string, string>), object properties = default(object), Dictionary<string, List<string>> customHeaders = null, CancellationToken cancellationToken = default(CancellationToken));
         /// <summary>
         /// Deletes a Cognitive Services account from the resource group.
         /// </summary>
diff --git a/src/SDKs/CognitiveServices/management/Management.CognitiveServices/Generated/Models/CognitiveServicesAccount.cs b/src/SDKs/CognitiveServices/management/Management.CognitiveServices/Generated/Models/CognitiveServicesAccount.cs
index 62feef2b340a8..2a060e0925bc9 100644
--- a/src/SDKs/CognitiveServices/management/Management.CognitiveServices/Generated/Models/CognitiveServicesAccount.cs
+++ b/src/SDKs/CognitiveServices/management/Management.CognitiveServices/Generated/Models/CognitiveServicesAccount.cs
@@ -47,6 +47,8 @@ public CognitiveServicesAccount()
         /// 'Succeeded', 'Failed'</param>
         /// <param name="endpoint">Endpoint of the created account.</param>
         /// <param name="internalId">The internal identifier.</param>
+        /// <param name="customSubDomainName">Optional subdomain name used for
+        /// token-based authentication.</param>
         /// <param name="sku">The SKU of Cognitive Services account.</param>
         /// <param name="tags">Gets or sets a list of key value pairs that
         /// describe the resource. These tags can be used in viewing and
@@ -55,7 +57,7 @@ public CognitiveServicesAccount()
         /// greater than 128 characters and value no greater than 256
         /// characters.</param>
         /// <param name="type">Resource type</param>
-        public CognitiveServicesAccount(string etag = default(string), string id = default(string), string kind = default(string), string location = default(string), string name = default(string), string provisioningState = default(string), string endpoint = default(string), string internalId = default(string), Sku sku = default(Sku), IDictionary<string, string> tags = default(IDictionary<string, string>), string type = default(string))
+        public CognitiveServicesAccount(string etag = default(string), string id = default(string), string kind = default(string), string location = default(string), string name = default(string), string provisioningState = default(string), string endpoint = default(string), string internalId = default(string), string customSubDomainName = default(string), Sku sku = default(Sku), IDictionary<string, string> tags = default(IDictionary<string, string>), string type = default(string))
         {
             Etag = etag;
             Id = id;
@@ -65,6 +67,7 @@ public CognitiveServicesAccount()
             ProvisioningState = provisioningState;
             Endpoint = endpoint;
             InternalId = internalId;
+            CustomSubDomainName = customSubDomainName;
             Sku = sku;
             Tags = tags;
             Type = type;
@@ -126,6 +129,13 @@ public CognitiveServicesAccount()
         [JsonProperty(PropertyName = "properties.internalId")]
         public string InternalId { get; set; }
 
+        /// <summary>
+        /// Gets or sets optional subdomain name used for token-based
+        /// authentication.
+        /// </summary>
+        [JsonProperty(PropertyName = "properties.customSubDomainName")]
+        public string CustomSubDomainName { get; set; }
+
         /// <summary>
         /// Gets or sets the SKU of Cognitive Services account.
         /// </summary>
diff --git a/src/SDKs/CognitiveServices/management/Management.CognitiveServices/Generated/Models/CognitiveServicesAccountUpdateParameters.cs b/src/SDKs/CognitiveServices/management/Management.CognitiveServices/Generated/Models/CognitiveServicesAccountUpdateParameters.cs
index 2e979facb0660..3367287010418 100644
--- a/src/SDKs/CognitiveServices/management/Management.CognitiveServices/Generated/Models/CognitiveServicesAccountUpdateParameters.cs
+++ b/src/SDKs/CognitiveServices/management/Management.CognitiveServices/Generated/Models/CognitiveServicesAccountUpdateParameters.cs
@@ -40,10 +40,13 @@ public CognitiveServicesAccountUpdateParameters()
         /// tags can be provided for a resource. Each tag must have a key no
         /// greater than 128 characters and value no greater than 256
         /// characters.</param>
-        public CognitiveServicesAccountUpdateParameters(Sku sku = default(Sku), IDictionary<string, string> tags = default(IDictionary<string, string>))
+        /// <param name="properties">Additional properties for Account. Only
+        /// provided fileds will be updated.</param>
+        public CognitiveServicesAccountUpdateParameters(Sku sku = default(Sku), IDictionary<string, string> tags = default(IDictionary<string, string>), object properties = default(object))
         {
             Sku = sku;
             Tags = tags;
+            Properties = properties;
             CustomInit();
         }
 
@@ -68,6 +71,13 @@ public CognitiveServicesAccountUpdateParameters()
         [JsonProperty(PropertyName = "tags")]
         public IDictionary<string, string> Tags { get; set; }
 
+        /// <summary>
+        /// Gets or sets additional properties for Account. Only provided
+        /// fileds will be updated.
+        /// </summary>
+        [JsonProperty(PropertyName = "properties")]
+        public object Properties { get; set; }
+
         /// <summary>
         /// Validate the object.
         /// </summary>
diff --git a/src/SDKs/CognitiveServices/management/Management.CognitiveServices/Generated/SdkInfo_CognitiveServicesManagementClient.cs b/src/SDKs/CognitiveServices/management/Management.CognitiveServices/Generated/SdkInfo_CognitiveServicesManagementClient.cs
index 4f78150a3d412..14cb92cbea3b2 100644
--- a/src/SDKs/CognitiveServices/management/Management.CognitiveServices/Generated/SdkInfo_CognitiveServicesManagementClient.cs
+++ b/src/SDKs/CognitiveServices/management/Management.CognitiveServices/Generated/SdkInfo_CognitiveServicesManagementClient.cs
@@ -26,16 +26,5 @@ public static IEnumerable<Tuple<string, string, string>> ApiInfo_CognitiveServic
               }.AsEnumerable();
           }
       }
-      // BEGIN: Code Generation Metadata Section
-      public static readonly String AutoRestVersion = "latest";
-      public static readonly String AutoRestBootStrapperVersion = "autorest@2.0.4283";
-      public static readonly String AutoRestCmdExecuted = "cmd.exe /c autorest.cmd https://github.com/Azure/azure-rest-api-specs/blob/master/specification/cognitiveservices/resource-manager/readme.md --csharp --version=latest --reflect-api-versions --csharp-sdks-folder=D:\\Github\\azure-sdk-for-net\\src\\SDKs";
-      public static readonly String GithubForkName = "Azure";
-      public static readonly String GithubBranchName = "master";
-      public static readonly String GithubCommidId = "a5fd13fd813e416fc4500310537491482ad401b3";
-      public static readonly String CodeGenerationErrors = "";
-      public static readonly String GithubRepoName = "azure-rest-api-specs";
-      // END: Code Generation Metadata Section
   }
 }
-