diff --git a/src/IBM.Watson.NaturalLanguageUnderstanding.v1/INaturalLanguageUnderstandingService.cs b/src/IBM.Watson.NaturalLanguageUnderstanding.v1/INaturalLanguageUnderstandingService.cs
index 5b8f048ae4..eab14bd484 100644
--- a/src/IBM.Watson.NaturalLanguageUnderstanding.v1/INaturalLanguageUnderstandingService.cs
+++ b/src/IBM.Watson.NaturalLanguageUnderstanding.v1/INaturalLanguageUnderstandingService.cs
@@ -1,5 +1,5 @@
 /**
-* (C) Copyright IBM Corp. 2019, 2021.
+* (C) Copyright IBM Corp. 2022.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
@@ -35,10 +35,10 @@ public partial interface INaturalLanguageUnderstandingService
         DetailedResponse<CategoriesModel> GetCategoriesModel(string modelId);
         DetailedResponse<CategoriesModel> UpdateCategoriesModel(string modelId, string language, System.IO.MemoryStream trainingData, string trainingDataContentType = null, string name = null, string description = null, string modelVersion = null, string workspaceId = null, string versionDescription = null);
         DetailedResponse<DeleteModelResults> DeleteCategoriesModel(string modelId);
-        DetailedResponse<ClassificationsModel> CreateClassificationsModel(string language, System.IO.MemoryStream trainingData, string trainingDataContentType = null, string name = null, string description = null, string modelVersion = null, string workspaceId = null, string versionDescription = null);
+        DetailedResponse<ClassificationsModel> CreateClassificationsModel(string language, System.IO.MemoryStream trainingData, string trainingDataContentType = null, string name = null, string description = null, string modelVersion = null, string workspaceId = null, string versionDescription = null, ClassificationsTrainingParameters trainingParameters = null);
         DetailedResponse<ClassificationsModelList> ListClassificationsModels();
         DetailedResponse<ClassificationsModel> GetClassificationsModel(string modelId);
-        DetailedResponse<ClassificationsModel> UpdateClassificationsModel(string modelId, string language, System.IO.MemoryStream trainingData, string trainingDataContentType = null, string name = null, string description = null, string modelVersion = null, string workspaceId = null, string versionDescription = null);
+        DetailedResponse<ClassificationsModel> UpdateClassificationsModel(string modelId, string language, System.IO.MemoryStream trainingData, string trainingDataContentType = null, string name = null, string description = null, string modelVersion = null, string workspaceId = null, string versionDescription = null, ClassificationsTrainingParameters trainingParameters = null);
         DetailedResponse<DeleteModelResults> DeleteClassificationsModel(string modelId);
     }
 }
diff --git a/src/IBM.Watson.NaturalLanguageUnderstanding.v1/Model/ClassificationsTrainingParameters.cs b/src/IBM.Watson.NaturalLanguageUnderstanding.v1/Model/ClassificationsTrainingParameters.cs
new file mode 100644
index 0000000000..1b75cdde81
--- /dev/null
+++ b/src/IBM.Watson.NaturalLanguageUnderstanding.v1/Model/ClassificationsTrainingParameters.cs
@@ -0,0 +1,51 @@
+/**
+* (C) Copyright IBM Corp. 2022.
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*      http://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+*/
+
+using Newtonsoft.Json;
+
+namespace IBM.Watson.NaturalLanguageUnderstanding.v1.Model
+{
+    /// <summary>
+    /// Optional classifications training parameters along with model train requests.
+    /// </summary>
+    public class ClassificationsTrainingParameters
+    {
+        /// <summary>
+        /// Model type selector to train either a single_label or a multi_label classifier.
+        /// </summary>
+        public class ModelTypeEnumValue
+        {
+            /// <summary>
+            /// Constant SINGLE_LABEL for single_label
+            /// </summary>
+            public const string SINGLE_LABEL = "single_label";
+            /// <summary>
+            /// Constant MULTI_LABEL for multi_label
+            /// </summary>
+            public const string MULTI_LABEL = "multi_label";
+            
+        }
+
+        /// <summary>
+        /// Model type selector to train either a single_label or a multi_label classifier.
+        /// Constants for possible values can be found using ClassificationsTrainingParameters.ModelTypeEnumValue
+        /// </summary>
+        [JsonProperty("model_type", NullValueHandling = NullValueHandling.Ignore)]
+        public string ModelType { get; set; }
+    }
+
+}
diff --git a/src/IBM.Watson.NaturalLanguageUnderstanding.v1/NaturalLanguageUnderstandingService.cs b/src/IBM.Watson.NaturalLanguageUnderstanding.v1/NaturalLanguageUnderstandingService.cs
index 40e46ea00d..510c8c4c4c 100644
--- a/src/IBM.Watson.NaturalLanguageUnderstanding.v1/NaturalLanguageUnderstandingService.cs
+++ b/src/IBM.Watson.NaturalLanguageUnderstanding.v1/NaturalLanguageUnderstandingService.cs
@@ -1,5 +1,5 @@
 /**
-* (C) Copyright IBM Corp. 2017, 2022.
+* (C) Copyright IBM Corp. 2022.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
@@ -16,7 +16,7 @@
 */
 
 /**
-* IBM OpenAPI SDK Code Generator Version: 3.46.0-a4e29da0-20220224-210428
+* IBM OpenAPI SDK Code Generator Version: 3.53.0-9710cac3-20220713-193508
 */
  
 using System.Collections.Generic;
@@ -1150,8 +1150,10 @@ public DetailedResponse<DeleteModelResults> DeleteCategoriesModel(string modelId
         /// <param name="workspaceId">ID of the Watson Knowledge Studio workspace that deployed this model to Natural
         /// Language Understanding. (optional)</param>
         /// <param name="versionDescription">The description of the version. (optional)</param>
+        /// <param name="trainingParameters">Optional classifications training parameters along with model train
+        /// requests. (optional)</param>
         /// <returns><see cref="ClassificationsModel" />ClassificationsModel</returns>
-        public DetailedResponse<ClassificationsModel> CreateClassificationsModel(string language, System.IO.MemoryStream trainingData, string trainingDataContentType = null, string name = null, string description = null, string modelVersion = null, string workspaceId = null, string versionDescription = null)
+        public DetailedResponse<ClassificationsModel> CreateClassificationsModel(string language, System.IO.MemoryStream trainingData, string trainingDataContentType = null, string name = null, string description = null, string modelVersion = null, string workspaceId = null, string versionDescription = null, ClassificationsTrainingParameters trainingParameters = null)
         {
             if (string.IsNullOrEmpty(Version))
             {
@@ -1222,6 +1224,13 @@ public DetailedResponse<ClassificationsModel> CreateClassificationsModel(string
                     formData.Add(versionDescriptionContent, "version_description");
                 }
 
+                if (trainingParameters != null)
+                {
+                    var trainingParametersContent = new StringContent(JsonConvert.SerializeObject(trainingParameters), Encoding.UTF8, HttpMediaType.APPLICATION_JSON);
+                    trainingParametersContent.Headers.ContentType = null;
+                    formData.Add(trainingParametersContent, "training_parameters");
+                }
+
                 IClient client = this.Client;
                 SetAuthentication();
 
@@ -1391,8 +1400,10 @@ public DetailedResponse<ClassificationsModel> GetClassificationsModel(string mod
         /// <param name="workspaceId">ID of the Watson Knowledge Studio workspace that deployed this model to Natural
         /// Language Understanding. (optional)</param>
         /// <param name="versionDescription">The description of the version. (optional)</param>
+        /// <param name="trainingParameters">Optional classifications training parameters along with model train
+        /// requests. (optional)</param>
         /// <returns><see cref="ClassificationsModel" />ClassificationsModel</returns>
-        public DetailedResponse<ClassificationsModel> UpdateClassificationsModel(string modelId, string language, System.IO.MemoryStream trainingData, string trainingDataContentType = null, string name = null, string description = null, string modelVersion = null, string workspaceId = null, string versionDescription = null)
+        public DetailedResponse<ClassificationsModel> UpdateClassificationsModel(string modelId, string language, System.IO.MemoryStream trainingData, string trainingDataContentType = null, string name = null, string description = null, string modelVersion = null, string workspaceId = null, string versionDescription = null, ClassificationsTrainingParameters trainingParameters = null)
         {
             if (string.IsNullOrEmpty(Version))
             {
@@ -1471,6 +1482,13 @@ public DetailedResponse<ClassificationsModel> UpdateClassificationsModel(string
                     formData.Add(versionDescriptionContent, "version_description");
                 }
 
+                if (trainingParameters != null)
+                {
+                    var trainingParametersContent = new StringContent(JsonConvert.SerializeObject(trainingParameters), Encoding.UTF8, HttpMediaType.APPLICATION_JSON);
+                    trainingParametersContent.Headers.ContentType = null;
+                    formData.Add(trainingParametersContent, "training_parameters");
+                }
+
                 IClient client = this.Client;
                 SetAuthentication();