diff --git a/lib/services/dnsManagement/lib/dnsManagementClient.d.ts b/lib/services/dnsManagement/lib/dnsManagementClient.d.ts
index 47b7ab6f52..dd8b2772e3 100644
--- a/lib/services/dnsManagement/lib/dnsManagementClient.d.ts
+++ b/lib/services/dnsManagement/lib/dnsManagementClient.d.ts
@@ -21,7 +21,7 @@ export default class DnsManagementClient extends AzureServiceClient {
    * @class
    * @param {credentials} credentials - Credentials needed for the client to connect to Azure.
    *
-   * @param {string} subscriptionId - Specifies the Azure subscription ID, which uniquely identifies the Microsoft Azure subscription.
+   * @param {string} subscriptionId - The ID of the target subscription.
    *
    * @param {string} [baseUri] - The base URI of the service.
    *
diff --git a/lib/services/dnsManagement/lib/dnsManagementClient.js b/lib/services/dnsManagement/lib/dnsManagementClient.js
index 0de5e08bba..229370e385 100644
--- a/lib/services/dnsManagement/lib/dnsManagementClient.js
+++ b/lib/services/dnsManagement/lib/dnsManagementClient.js
@@ -27,7 +27,7 @@ class DnsManagementClient extends ServiceClient {
   /**
    * Create a DnsManagementClient.
    * @param {credentials} credentials - Credentials needed for the client to connect to Azure.
-   * @param {string} subscriptionId - Specifies the Azure subscription ID, which uniquely identifies the Microsoft Azure subscription.
+   * @param {string} subscriptionId - The ID of the target subscription.
    * @param {string} [baseUri] - The base URI of the service.
    * @param {object} [options] - The parameter options
    * @param {Array} [options.filters] - Filters to be added to the request pipeline
diff --git a/lib/services/dnsManagement/lib/models/azureEntityResource.js b/lib/services/dnsManagement/lib/models/azureEntityResource.js
new file mode 100644
index 0000000000..a87a9fe033
--- /dev/null
+++ b/lib/services/dnsManagement/lib/models/azureEntityResource.js
@@ -0,0 +1,82 @@
+/*
+ * Copyright (c) Microsoft Corporation. All rights reserved.
+ * Licensed under the MIT License. See License.txt in the project root for
+ * license information.
+ *
+ * Code generated by Microsoft (R) AutoRest Code Generator.
+ * Changes may cause incorrect behavior and will be lost if the code is
+ * regenerated.
+ */
+
+'use strict';
+
+const models = require('./index');
+
+/**
+ * The resource model definition for a Azure Resource Manager resource with an
+ * etag.
+ *
+ * @extends models['Resource']
+ */
+class AzureEntityResource extends models['Resource'] {
+  /**
+   * Create a AzureEntityResource.
+   * @member {string} [etag] Resource Etag.
+   */
+  constructor() {
+    super();
+  }
+
+  /**
+   * Defines the metadata of AzureEntityResource
+   *
+   * @returns {object} metadata of AzureEntityResource
+   *
+   */
+  mapper() {
+    return {
+      required: false,
+      serializedName: 'AzureEntityResource',
+      type: {
+        name: 'Composite',
+        className: 'AzureEntityResource',
+        modelProperties: {
+          id: {
+            required: false,
+            readOnly: true,
+            serializedName: 'id',
+            type: {
+              name: 'String'
+            }
+          },
+          name: {
+            required: false,
+            readOnly: true,
+            serializedName: 'name',
+            type: {
+              name: 'String'
+            }
+          },
+          type: {
+            required: false,
+            readOnly: true,
+            serializedName: 'type',
+            type: {
+              name: 'String'
+            }
+          },
+          etag: {
+            required: false,
+            readOnly: true,
+            serializedName: 'etag',
+            type: {
+              name: 'String'
+            }
+          }
+        }
+      }
+    };
+  }
+}
+
+module.exports = AzureEntityResource;
diff --git a/lib/services/dnsManagement/lib/models/index.d.ts b/lib/services/dnsManagement/lib/models/index.d.ts
index 4639ea05fb..2ada0aefa6 100644
--- a/lib/services/dnsManagement/lib/models/index.d.ts
+++ b/lib/services/dnsManagement/lib/models/index.d.ts
@@ -299,20 +299,30 @@ export interface SubResource {
  * @class
  * Initializes a new instance of the Resource class.
  * @constructor
- * Common properties of an Azure Resource Manager resource
- *
- * @member {string} [id] Resource ID.
- * @member {string} [name] Resource name.
- * @member {string} [type] Resource type.
- * @member {string} location Resource location.
- * @member {object} [tags] Resource tags.
+ * @member {string} [id] Fully qualified resource Id for the resource. Ex -
+ * /subscriptions/{subscriptionId}/resourceGroups/{resourceGroupName}/providers/{resourceProviderNamespace}/{resourceType}/{resourceName}
+ * @member {string} [name] The name of the resource
+ * @member {string} [type] The type of the resource. Ex-
+ * Microsoft.Compute/virtualMachines or Microsoft.Storage/storageAccounts.
  */
 export interface Resource extends BaseResource {
   readonly id?: string;
   readonly name?: string;
   readonly type?: string;
-  location: string;
+}
+
+/**
+ * @class
+ * Initializes a new instance of the TrackedResource class.
+ * @constructor
+ * The resource model definition for a ARM tracked top level resource
+ *
+ * @member {object} [tags] Resource tags.
+ * @member {string} location The geo-location where the resource lives
+ */
+export interface TrackedResource extends Resource {
   tags?: { [propertyName: string]: string };
+  location: string;
 }
 
 /**
@@ -339,7 +349,7 @@ export interface Resource extends BaseResource {
  * networks that resolve records in this DNS zone. This is a only when ZoneType
  * is Private.
  */
-export interface Zone extends Resource {
+export interface Zone extends TrackedResource {
   etag?: string;
   readonly maxNumberOfRecordSets?: number;
   readonly numberOfRecordSets?: number;
@@ -361,6 +371,30 @@ export interface ZoneUpdate {
   tags?: { [propertyName: string]: string };
 }
 
+/**
+ * @class
+ * Initializes a new instance of the ProxyResource class.
+ * @constructor
+ * The resource model definition for a ARM proxy resource. It will have
+ * everything other than required location and tags
+ *
+ */
+export interface ProxyResource extends Resource {
+}
+
+/**
+ * @class
+ * Initializes a new instance of the AzureEntityResource class.
+ * @constructor
+ * The resource model definition for a Azure Resource Manager resource with an
+ * etag.
+ *
+ * @member {string} [etag] Resource Etag.
+ */
+export interface AzureEntityResource extends Resource {
+  readonly etag?: string;
+}
+
 
 /**
  * @class
diff --git a/lib/services/dnsManagement/lib/models/index.js b/lib/services/dnsManagement/lib/models/index.js
index 0d19602959..abc57ce9da 100644
--- a/lib/services/dnsManagement/lib/models/index.js
+++ b/lib/services/dnsManagement/lib/models/index.js
@@ -32,7 +32,10 @@ exports.RecordSet = require('./recordSet');
 exports.RecordSetUpdateParameters = require('./recordSetUpdateParameters');
 exports.SubResource = require('./subResource');
 exports.Resource = require('./resource');
+exports.TrackedResource = require('./trackedResource');
 exports.Zone = require('./zone');
 exports.ZoneUpdate = require('./zoneUpdate');
+exports.ProxyResource = require('./proxyResource');
+exports.AzureEntityResource = require('./azureEntityResource');
 exports.RecordSetListResult = require('./recordSetListResult');
 exports.ZoneListResult = require('./zoneListResult');
diff --git a/lib/services/dnsManagement/lib/models/proxyResource.js b/lib/services/dnsManagement/lib/models/proxyResource.js
new file mode 100644
index 0000000000..43e93ec60e
--- /dev/null
+++ b/lib/services/dnsManagement/lib/models/proxyResource.js
@@ -0,0 +1,73 @@
+/*
+ * Copyright (c) Microsoft Corporation. All rights reserved.
+ * Licensed under the MIT License. See License.txt in the project root for
+ * license information.
+ *
+ * Code generated by Microsoft (R) AutoRest Code Generator.
+ * Changes may cause incorrect behavior and will be lost if the code is
+ * regenerated.
+ */
+
+'use strict';
+
+const models = require('./index');
+
+/**
+ * The resource model definition for a ARM proxy resource. It will have
+ * everything other than required location and tags
+ *
+ * @extends models['Resource']
+ */
+class ProxyResource extends models['Resource'] {
+  /**
+   * Create a ProxyResource.
+   */
+  constructor() {
+    super();
+  }
+
+  /**
+   * Defines the metadata of ProxyResource
+   *
+   * @returns {object} metadata of ProxyResource
+   *
+   */
+  mapper() {
+    return {
+      required: false,
+      serializedName: 'ProxyResource',
+      type: {
+        name: 'Composite',
+        className: 'ProxyResource',
+        modelProperties: {
+          id: {
+            required: false,
+            readOnly: true,
+            serializedName: 'id',
+            type: {
+              name: 'String'
+            }
+          },
+          name: {
+            required: false,
+            readOnly: true,
+            serializedName: 'name',
+            type: {
+              name: 'String'
+            }
+          },
+          type: {
+            required: false,
+            readOnly: true,
+            serializedName: 'type',
+            type: {
+              name: 'String'
+            }
+          }
+        }
+      }
+    };
+  }
+}
+
+module.exports = ProxyResource;
diff --git a/lib/services/dnsManagement/lib/models/resource.js b/lib/services/dnsManagement/lib/models/resource.js
index e1a4b6ebd6..b9797bc86d 100644
--- a/lib/services/dnsManagement/lib/models/resource.js
+++ b/lib/services/dnsManagement/lib/models/resource.js
@@ -13,18 +13,17 @@
 const models = require('./index');
 
 /**
- * Common properties of an Azure Resource Manager resource
- *
+ * Class representing a Resource.
  * @extends models['BaseResource']
  */
 class Resource extends models['BaseResource'] {
   /**
    * Create a Resource.
-   * @member {string} [id] Resource ID.
-   * @member {string} [name] Resource name.
-   * @member {string} [type] Resource type.
-   * @member {string} location Resource location.
-   * @member {object} [tags] Resource tags.
+   * @member {string} [id] Fully qualified resource Id for the resource. Ex -
+   * /subscriptions/{subscriptionId}/resourceGroups/{resourceGroupName}/providers/{resourceProviderNamespace}/{resourceType}/{resourceName}
+   * @member {string} [name] The name of the resource
+   * @member {string} [type] The type of the resource. Ex-
+   * Microsoft.Compute/virtualMachines or Microsoft.Storage/storageAccounts.
    */
   constructor() {
     super();
@@ -67,27 +66,6 @@ class Resource extends models['BaseResource'] {
             type: {
               name: 'String'
             }
-          },
-          location: {
-            required: true,
-            serializedName: 'location',
-            type: {
-              name: 'String'
-            }
-          },
-          tags: {
-            required: false,
-            serializedName: 'tags',
-            type: {
-              name: 'Dictionary',
-              value: {
-                  required: false,
-                  serializedName: 'StringElementType',
-                  type: {
-                    name: 'String'
-                  }
-              }
-            }
           }
         }
       }
diff --git a/lib/services/dnsManagement/lib/models/trackedResource.js b/lib/services/dnsManagement/lib/models/trackedResource.js
new file mode 100644
index 0000000000..5c6804d7c8
--- /dev/null
+++ b/lib/services/dnsManagement/lib/models/trackedResource.js
@@ -0,0 +1,95 @@
+/*
+ * Copyright (c) Microsoft Corporation. All rights reserved.
+ * Licensed under the MIT License. See License.txt in the project root for
+ * license information.
+ *
+ * Code generated by Microsoft (R) AutoRest Code Generator.
+ * Changes may cause incorrect behavior and will be lost if the code is
+ * regenerated.
+ */
+
+'use strict';
+
+const models = require('./index');
+
+/**
+ * The resource model definition for a ARM tracked top level resource
+ *
+ * @extends models['Resource']
+ */
+class TrackedResource extends models['Resource'] {
+  /**
+   * Create a TrackedResource.
+   * @member {object} [tags] Resource tags.
+   * @member {string} location The geo-location where the resource lives
+   */
+  constructor() {
+    super();
+  }
+
+  /**
+   * Defines the metadata of TrackedResource
+   *
+   * @returns {object} metadata of TrackedResource
+   *
+   */
+  mapper() {
+    return {
+      required: false,
+      serializedName: 'TrackedResource',
+      type: {
+        name: 'Composite',
+        className: 'TrackedResource',
+        modelProperties: {
+          id: {
+            required: false,
+            readOnly: true,
+            serializedName: 'id',
+            type: {
+              name: 'String'
+            }
+          },
+          name: {
+            required: false,
+            readOnly: true,
+            serializedName: 'name',
+            type: {
+              name: 'String'
+            }
+          },
+          type: {
+            required: false,
+            readOnly: true,
+            serializedName: 'type',
+            type: {
+              name: 'String'
+            }
+          },
+          tags: {
+            required: false,
+            serializedName: 'tags',
+            type: {
+              name: 'Dictionary',
+              value: {
+                  required: false,
+                  serializedName: 'StringElementType',
+                  type: {
+                    name: 'String'
+                  }
+              }
+            }
+          },
+          location: {
+            required: true,
+            serializedName: 'location',
+            type: {
+              name: 'String'
+            }
+          }
+        }
+      }
+    };
+  }
+}
+
+module.exports = TrackedResource;
diff --git a/lib/services/dnsManagement/lib/models/zone.js b/lib/services/dnsManagement/lib/models/zone.js
index 5c1728ee72..b6d3434c70 100644
--- a/lib/services/dnsManagement/lib/models/zone.js
+++ b/lib/services/dnsManagement/lib/models/zone.js
@@ -15,9 +15,9 @@ const models = require('./index');
 /**
  * Describes a DNS zone.
  *
- * @extends models['Resource']
+ * @extends models['TrackedResource']
  */
-class Zone extends models['Resource'] {
+class Zone extends models['TrackedResource'] {
   /**
    * Create a Zone.
    * @member {string} [etag] The etag of the zone.
@@ -80,13 +80,6 @@ class Zone extends models['Resource'] {
               name: 'String'
             }
           },
-          location: {
-            required: true,
-            serializedName: 'location',
-            type: {
-              name: 'String'
-            }
-          },
           tags: {
             required: false,
             serializedName: 'tags',
@@ -101,6 +94,13 @@ class Zone extends models['Resource'] {
               }
             }
           },
+          location: {
+            required: true,
+            serializedName: 'location',
+            type: {
+              name: 'String'
+            }
+          },
           etag: {
             required: false,
             serializedName: 'etag',
diff --git a/lib/services/dnsManagement/lib/operations/index.d.ts b/lib/services/dnsManagement/lib/operations/index.d.ts
index 1153659198..dfe431434e 100644
--- a/lib/services/dnsManagement/lib/operations/index.d.ts
+++ b/lib/services/dnsManagement/lib/operations/index.d.ts
@@ -1072,10 +1072,11 @@ export interface Zones {
      * to virtual networks that resolve records in this DNS zone. This is a only
      * when ZoneType is Private.
      *
-     * @param {string} parameters.location Resource location.
-     *
      * @param {object} [parameters.tags] Resource tags.
      *
+     * @param {string} parameters.location The geo-location where the resource
+     * lives
+     *
      * @param {object} [options] Optional Parameters.
      *
      * @param {string} [options.ifMatch] The etag of the DNS zone. Omit this value
@@ -1122,10 +1123,11 @@ export interface Zones {
      * to virtual networks that resolve records in this DNS zone. This is a only
      * when ZoneType is Private.
      *
-     * @param {string} parameters.location Resource location.
-     *
      * @param {object} [parameters.tags] Resource tags.
      *
+     * @param {string} parameters.location The geo-location where the resource
+     * lives
+     *
      * @param {object} [options] Optional Parameters.
      *
      * @param {string} [options.ifMatch] The etag of the DNS zone. Omit this value
diff --git a/lib/services/dnsManagement/lib/operations/recordSets.js b/lib/services/dnsManagement/lib/operations/recordSets.js
index 584fc0dfa2..3fd6b4c92f 100644
--- a/lib/services/dnsManagement/lib/operations/recordSets.js
+++ b/lib/services/dnsManagement/lib/operations/recordSets.js
@@ -169,9 +169,21 @@ function _update(resourceGroupName, zoneName, relativeRecordSetName, recordType,
     if (this.client.apiVersion === null || this.client.apiVersion === undefined || typeof this.client.apiVersion.valueOf() !== 'string') {
       throw new Error('this.client.apiVersion cannot be null or undefined and it must be of type string.');
     }
+    if (this.client.apiVersion !== null && this.client.apiVersion !== undefined) {
+      if (this.client.apiVersion.length < 1)
+      {
+        throw new Error('"this.client.apiVersion" should satisfy the constraint - "MinLength": 1');
+      }
+    }
     if (this.client.subscriptionId === null || this.client.subscriptionId === undefined || typeof this.client.subscriptionId.valueOf() !== 'string') {
       throw new Error('this.client.subscriptionId cannot be null or undefined and it must be of type string.');
     }
+    if (this.client.subscriptionId !== null && this.client.subscriptionId !== undefined) {
+      if (this.client.subscriptionId.length < 1)
+      {
+        throw new Error('"this.client.subscriptionId" should satisfy the constraint - "MinLength": 1');
+      }
+    }
     if (this.client.acceptLanguage !== null && this.client.acceptLanguage !== undefined && typeof this.client.acceptLanguage.valueOf() !== 'string') {
       throw new Error('this.client.acceptLanguage must be of type string.');
     }
@@ -452,9 +464,21 @@ function _createOrUpdate(resourceGroupName, zoneName, relativeRecordSetName, rec
     if (this.client.apiVersion === null || this.client.apiVersion === undefined || typeof this.client.apiVersion.valueOf() !== 'string') {
       throw new Error('this.client.apiVersion cannot be null or undefined and it must be of type string.');
     }
+    if (this.client.apiVersion !== null && this.client.apiVersion !== undefined) {
+      if (this.client.apiVersion.length < 1)
+      {
+        throw new Error('"this.client.apiVersion" should satisfy the constraint - "MinLength": 1');
+      }
+    }
     if (this.client.subscriptionId === null || this.client.subscriptionId === undefined || typeof this.client.subscriptionId.valueOf() !== 'string') {
       throw new Error('this.client.subscriptionId cannot be null or undefined and it must be of type string.');
     }
+    if (this.client.subscriptionId !== null && this.client.subscriptionId !== undefined) {
+      if (this.client.subscriptionId.length < 1)
+      {
+        throw new Error('"this.client.subscriptionId" should satisfy the constraint - "MinLength": 1');
+      }
+    }
     if (this.client.acceptLanguage !== null && this.client.acceptLanguage !== undefined && typeof this.client.acceptLanguage.valueOf() !== 'string') {
       throw new Error('this.client.acceptLanguage must be of type string.');
     }
@@ -678,9 +702,21 @@ function _deleteMethod(resourceGroupName, zoneName, relativeRecordSetName, recor
     if (this.client.apiVersion === null || this.client.apiVersion === undefined || typeof this.client.apiVersion.valueOf() !== 'string') {
       throw new Error('this.client.apiVersion cannot be null or undefined and it must be of type string.');
     }
+    if (this.client.apiVersion !== null && this.client.apiVersion !== undefined) {
+      if (this.client.apiVersion.length < 1)
+      {
+        throw new Error('"this.client.apiVersion" should satisfy the constraint - "MinLength": 1');
+      }
+    }
     if (this.client.subscriptionId === null || this.client.subscriptionId === undefined || typeof this.client.subscriptionId.valueOf() !== 'string') {
       throw new Error('this.client.subscriptionId cannot be null or undefined and it must be of type string.');
     }
+    if (this.client.subscriptionId !== null && this.client.subscriptionId !== undefined) {
+      if (this.client.subscriptionId.length < 1)
+      {
+        throw new Error('"this.client.subscriptionId" should satisfy the constraint - "MinLength": 1');
+      }
+    }
     if (this.client.acceptLanguage !== null && this.client.acceptLanguage !== undefined && typeof this.client.acceptLanguage.valueOf() !== 'string') {
       throw new Error('this.client.acceptLanguage must be of type string.');
     }
@@ -845,9 +881,21 @@ function _get(resourceGroupName, zoneName, relativeRecordSetName, recordType, op
     if (this.client.apiVersion === null || this.client.apiVersion === undefined || typeof this.client.apiVersion.valueOf() !== 'string') {
       throw new Error('this.client.apiVersion cannot be null or undefined and it must be of type string.');
     }
+    if (this.client.apiVersion !== null && this.client.apiVersion !== undefined) {
+      if (this.client.apiVersion.length < 1)
+      {
+        throw new Error('"this.client.apiVersion" should satisfy the constraint - "MinLength": 1');
+      }
+    }
     if (this.client.subscriptionId === null || this.client.subscriptionId === undefined || typeof this.client.subscriptionId.valueOf() !== 'string') {
       throw new Error('this.client.subscriptionId cannot be null or undefined and it must be of type string.');
     }
+    if (this.client.subscriptionId !== null && this.client.subscriptionId !== undefined) {
+      if (this.client.subscriptionId.length < 1)
+      {
+        throw new Error('"this.client.subscriptionId" should satisfy the constraint - "MinLength": 1');
+      }
+    }
     if (this.client.acceptLanguage !== null && this.client.acceptLanguage !== undefined && typeof this.client.acceptLanguage.valueOf() !== 'string') {
       throw new Error('this.client.acceptLanguage must be of type string.');
     }
@@ -1036,9 +1084,21 @@ function _listByType(resourceGroupName, zoneName, recordType, options, callback)
     if (this.client.apiVersion === null || this.client.apiVersion === undefined || typeof this.client.apiVersion.valueOf() !== 'string') {
       throw new Error('this.client.apiVersion cannot be null or undefined and it must be of type string.');
     }
+    if (this.client.apiVersion !== null && this.client.apiVersion !== undefined) {
+      if (this.client.apiVersion.length < 1)
+      {
+        throw new Error('"this.client.apiVersion" should satisfy the constraint - "MinLength": 1');
+      }
+    }
     if (this.client.subscriptionId === null || this.client.subscriptionId === undefined || typeof this.client.subscriptionId.valueOf() !== 'string') {
       throw new Error('this.client.subscriptionId cannot be null or undefined and it must be of type string.');
     }
+    if (this.client.subscriptionId !== null && this.client.subscriptionId !== undefined) {
+      if (this.client.subscriptionId.length < 1)
+      {
+        throw new Error('"this.client.subscriptionId" should satisfy the constraint - "MinLength": 1');
+      }
+    }
     if (this.client.acceptLanguage !== null && this.client.acceptLanguage !== undefined && typeof this.client.acceptLanguage.valueOf() !== 'string') {
       throw new Error('this.client.acceptLanguage must be of type string.');
     }
@@ -1220,9 +1280,21 @@ function _listByDnsZone(resourceGroupName, zoneName, options, callback) {
     if (this.client.apiVersion === null || this.client.apiVersion === undefined || typeof this.client.apiVersion.valueOf() !== 'string') {
       throw new Error('this.client.apiVersion cannot be null or undefined and it must be of type string.');
     }
+    if (this.client.apiVersion !== null && this.client.apiVersion !== undefined) {
+      if (this.client.apiVersion.length < 1)
+      {
+        throw new Error('"this.client.apiVersion" should satisfy the constraint - "MinLength": 1');
+      }
+    }
     if (this.client.subscriptionId === null || this.client.subscriptionId === undefined || typeof this.client.subscriptionId.valueOf() !== 'string') {
       throw new Error('this.client.subscriptionId cannot be null or undefined and it must be of type string.');
     }
+    if (this.client.subscriptionId !== null && this.client.subscriptionId !== undefined) {
+      if (this.client.subscriptionId.length < 1)
+      {
+        throw new Error('"this.client.subscriptionId" should satisfy the constraint - "MinLength": 1');
+      }
+    }
     if (this.client.acceptLanguage !== null && this.client.acceptLanguage !== undefined && typeof this.client.acceptLanguage.valueOf() !== 'string') {
       throw new Error('this.client.acceptLanguage must be of type string.');
     }
@@ -1403,9 +1475,21 @@ function _listAllByDnsZone(resourceGroupName, zoneName, options, callback) {
     if (this.client.apiVersion === null || this.client.apiVersion === undefined || typeof this.client.apiVersion.valueOf() !== 'string') {
       throw new Error('this.client.apiVersion cannot be null or undefined and it must be of type string.');
     }
+    if (this.client.apiVersion !== null && this.client.apiVersion !== undefined) {
+      if (this.client.apiVersion.length < 1)
+      {
+        throw new Error('"this.client.apiVersion" should satisfy the constraint - "MinLength": 1');
+      }
+    }
     if (this.client.subscriptionId === null || this.client.subscriptionId === undefined || typeof this.client.subscriptionId.valueOf() !== 'string') {
       throw new Error('this.client.subscriptionId cannot be null or undefined and it must be of type string.');
     }
+    if (this.client.subscriptionId !== null && this.client.subscriptionId !== undefined) {
+      if (this.client.subscriptionId.length < 1)
+      {
+        throw new Error('"this.client.subscriptionId" should satisfy the constraint - "MinLength": 1');
+      }
+    }
     if (this.client.acceptLanguage !== null && this.client.acceptLanguage !== undefined && typeof this.client.acceptLanguage.valueOf() !== 'string') {
       throw new Error('this.client.acceptLanguage must be of type string.');
     }
diff --git a/lib/services/dnsManagement/lib/operations/zones.js b/lib/services/dnsManagement/lib/operations/zones.js
index 46985a4071..ed245e6ed6 100644
--- a/lib/services/dnsManagement/lib/operations/zones.js
+++ b/lib/services/dnsManagement/lib/operations/zones.js
@@ -39,10 +39,11 @@ const WebResource = msRest.WebResource;
  * to virtual networks that resolve records in this DNS zone. This is a only
  * when ZoneType is Private.
  *
- * @param {string} parameters.location Resource location.
- *
  * @param {object} [parameters.tags] Resource tags.
  *
+ * @param {string} parameters.location The geo-location where the resource
+ * lives
+ *
  * @param {object} [options] Optional Parameters.
  *
  * @param {string} [options.ifMatch] The etag of the DNS zone. Omit this value
@@ -115,9 +116,21 @@ function _createOrUpdate(resourceGroupName, zoneName, parameters, options, callb
     if (this.client.apiVersion === null || this.client.apiVersion === undefined || typeof this.client.apiVersion.valueOf() !== 'string') {
       throw new Error('this.client.apiVersion cannot be null or undefined and it must be of type string.');
     }
+    if (this.client.apiVersion !== null && this.client.apiVersion !== undefined) {
+      if (this.client.apiVersion.length < 1)
+      {
+        throw new Error('"this.client.apiVersion" should satisfy the constraint - "MinLength": 1');
+      }
+    }
     if (this.client.subscriptionId === null || this.client.subscriptionId === undefined || typeof this.client.subscriptionId.valueOf() !== 'string') {
       throw new Error('this.client.subscriptionId cannot be null or undefined and it must be of type string.');
     }
+    if (this.client.subscriptionId !== null && this.client.subscriptionId !== undefined) {
+      if (this.client.subscriptionId.length < 1)
+      {
+        throw new Error('"this.client.subscriptionId" should satisfy the constraint - "MinLength": 1');
+      }
+    }
     if (this.client.acceptLanguage !== null && this.client.acceptLanguage !== undefined && typeof this.client.acceptLanguage.valueOf() !== 'string') {
       throw new Error('this.client.acceptLanguage must be of type string.');
     }
@@ -384,9 +397,21 @@ function _get(resourceGroupName, zoneName, options, callback) {
     if (this.client.apiVersion === null || this.client.apiVersion === undefined || typeof this.client.apiVersion.valueOf() !== 'string') {
       throw new Error('this.client.apiVersion cannot be null or undefined and it must be of type string.');
     }
+    if (this.client.apiVersion !== null && this.client.apiVersion !== undefined) {
+      if (this.client.apiVersion.length < 1)
+      {
+        throw new Error('"this.client.apiVersion" should satisfy the constraint - "MinLength": 1');
+      }
+    }
     if (this.client.subscriptionId === null || this.client.subscriptionId === undefined || typeof this.client.subscriptionId.valueOf() !== 'string') {
       throw new Error('this.client.subscriptionId cannot be null or undefined and it must be of type string.');
     }
+    if (this.client.subscriptionId !== null && this.client.subscriptionId !== undefined) {
+      if (this.client.subscriptionId.length < 1)
+      {
+        throw new Error('"this.client.subscriptionId" should satisfy the constraint - "MinLength": 1');
+      }
+    }
     if (this.client.acceptLanguage !== null && this.client.acceptLanguage !== undefined && typeof this.client.acceptLanguage.valueOf() !== 'string') {
       throw new Error('this.client.acceptLanguage must be of type string.');
     }
@@ -560,9 +585,21 @@ function _update(resourceGroupName, zoneName, parameters, options, callback) {
     if (this.client.apiVersion === null || this.client.apiVersion === undefined || typeof this.client.apiVersion.valueOf() !== 'string') {
       throw new Error('this.client.apiVersion cannot be null or undefined and it must be of type string.');
     }
+    if (this.client.apiVersion !== null && this.client.apiVersion !== undefined) {
+      if (this.client.apiVersion.length < 1)
+      {
+        throw new Error('"this.client.apiVersion" should satisfy the constraint - "MinLength": 1');
+      }
+    }
     if (this.client.subscriptionId === null || this.client.subscriptionId === undefined || typeof this.client.subscriptionId.valueOf() !== 'string') {
       throw new Error('this.client.subscriptionId cannot be null or undefined and it must be of type string.');
     }
+    if (this.client.subscriptionId !== null && this.client.subscriptionId !== undefined) {
+      if (this.client.subscriptionId.length < 1)
+      {
+        throw new Error('"this.client.subscriptionId" should satisfy the constraint - "MinLength": 1');
+      }
+    }
     if (this.client.acceptLanguage !== null && this.client.acceptLanguage !== undefined && typeof this.client.acceptLanguage.valueOf() !== 'string') {
       throw new Error('this.client.acceptLanguage must be of type string.');
     }
@@ -739,9 +776,21 @@ function _listByResourceGroup(resourceGroupName, options, callback) {
     if (this.client.apiVersion === null || this.client.apiVersion === undefined || typeof this.client.apiVersion.valueOf() !== 'string') {
       throw new Error('this.client.apiVersion cannot be null or undefined and it must be of type string.');
     }
+    if (this.client.apiVersion !== null && this.client.apiVersion !== undefined) {
+      if (this.client.apiVersion.length < 1)
+      {
+        throw new Error('"this.client.apiVersion" should satisfy the constraint - "MinLength": 1');
+      }
+    }
     if (this.client.subscriptionId === null || this.client.subscriptionId === undefined || typeof this.client.subscriptionId.valueOf() !== 'string') {
       throw new Error('this.client.subscriptionId cannot be null or undefined and it must be of type string.');
     }
+    if (this.client.subscriptionId !== null && this.client.subscriptionId !== undefined) {
+      if (this.client.subscriptionId.length < 1)
+      {
+        throw new Error('"this.client.subscriptionId" should satisfy the constraint - "MinLength": 1');
+      }
+    }
     if (this.client.acceptLanguage !== null && this.client.acceptLanguage !== undefined && typeof this.client.acceptLanguage.valueOf() !== 'string') {
       throw new Error('this.client.acceptLanguage must be of type string.');
     }
@@ -883,9 +932,21 @@ function _list(options, callback) {
     if (this.client.apiVersion === null || this.client.apiVersion === undefined || typeof this.client.apiVersion.valueOf() !== 'string') {
       throw new Error('this.client.apiVersion cannot be null or undefined and it must be of type string.');
     }
+    if (this.client.apiVersion !== null && this.client.apiVersion !== undefined) {
+      if (this.client.apiVersion.length < 1)
+      {
+        throw new Error('"this.client.apiVersion" should satisfy the constraint - "MinLength": 1');
+      }
+    }
     if (this.client.subscriptionId === null || this.client.subscriptionId === undefined || typeof this.client.subscriptionId.valueOf() !== 'string') {
       throw new Error('this.client.subscriptionId cannot be null or undefined and it must be of type string.');
     }
+    if (this.client.subscriptionId !== null && this.client.subscriptionId !== undefined) {
+      if (this.client.subscriptionId.length < 1)
+      {
+        throw new Error('"this.client.subscriptionId" should satisfy the constraint - "MinLength": 1');
+      }
+    }
     if (this.client.acceptLanguage !== null && this.client.acceptLanguage !== undefined && typeof this.client.acceptLanguage.valueOf() !== 'string') {
       throw new Error('this.client.acceptLanguage must be of type string.');
     }
@@ -1053,9 +1114,21 @@ function _beginDeleteMethod(resourceGroupName, zoneName, options, callback) {
     if (this.client.apiVersion === null || this.client.apiVersion === undefined || typeof this.client.apiVersion.valueOf() !== 'string') {
       throw new Error('this.client.apiVersion cannot be null or undefined and it must be of type string.');
     }
+    if (this.client.apiVersion !== null && this.client.apiVersion !== undefined) {
+      if (this.client.apiVersion.length < 1)
+      {
+        throw new Error('"this.client.apiVersion" should satisfy the constraint - "MinLength": 1');
+      }
+    }
     if (this.client.subscriptionId === null || this.client.subscriptionId === undefined || typeof this.client.subscriptionId.valueOf() !== 'string') {
       throw new Error('this.client.subscriptionId cannot be null or undefined and it must be of type string.');
     }
+    if (this.client.subscriptionId !== null && this.client.subscriptionId !== undefined) {
+      if (this.client.subscriptionId.length < 1)
+      {
+        throw new Error('"this.client.subscriptionId" should satisfy the constraint - "MinLength": 1');
+      }
+    }
     if (this.client.acceptLanguage !== null && this.client.acceptLanguage !== undefined && typeof this.client.acceptLanguage.valueOf() !== 'string') {
       throw new Error('this.client.acceptLanguage must be of type string.');
     }
@@ -1436,10 +1509,11 @@ class Zones {
    * to virtual networks that resolve records in this DNS zone. This is a only
    * when ZoneType is Private.
    *
-   * @param {string} parameters.location Resource location.
-   *
    * @param {object} [parameters.tags] Resource tags.
    *
+   * @param {string} parameters.location The geo-location where the resource
+   * lives
+   *
    * @param {object} [options] Optional Parameters.
    *
    * @param {string} [options.ifMatch] The etag of the DNS zone. Omit this value
@@ -1498,10 +1572,11 @@ class Zones {
    * to virtual networks that resolve records in this DNS zone. This is a only
    * when ZoneType is Private.
    *
-   * @param {string} parameters.location Resource location.
-   *
    * @param {object} [parameters.tags] Resource tags.
    *
+   * @param {string} parameters.location The geo-location where the resource
+   * lives
+   *
    * @param {object} [options] Optional Parameters.
    *
    * @param {string} [options.ifMatch] The etag of the DNS zone. Omit this value