diff --git a/lib/services/networkManagement2/lib/models/applicationGateway.js b/lib/services/networkManagement2/lib/models/applicationGateway.js
index a369ca4821..a375d3c5d6 100644
--- a/lib/services/networkManagement2/lib/models/applicationGateway.js
+++ b/lib/services/networkManagement2/lib/models/applicationGateway.js
@@ -107,7 +107,7 @@ class ApplicationGateway extends models['Resource'] {
    * @member {string} [provisioningState] Provisioning state of the application
    * gateway resource. Possible values are: 'Updating', 'Deleting', and
    * 'Failed'.
-   * @member {array} [customErrorConfiguration] Custom error configurations of
+   * @member {array} [customErrorConfigurations] Custom error configurations of
    * the application gateway resource.
    * @member {string} [etag] A unique read-only string that changes whenever
    * the resource is updated.
@@ -439,9 +439,9 @@ class ApplicationGateway extends models['Resource'] {
               name: 'String'
             }
           },
-          customErrorConfiguration: {
+          customErrorConfigurations: {
             required: false,
-            serializedName: 'properties.customErrorConfiguration',
+            serializedName: 'properties.customErrorConfigurations',
             type: {
               name: 'Sequence',
               element: {
diff --git a/lib/services/networkManagement2/lib/models/applicationGatewayCustomError.js b/lib/services/networkManagement2/lib/models/applicationGatewayCustomError.js
index 56b8ff1f91..99781e172e 100644
--- a/lib/services/networkManagement2/lib/models/applicationGatewayCustomError.js
+++ b/lib/services/networkManagement2/lib/models/applicationGatewayCustomError.js
@@ -18,7 +18,7 @@ class ApplicationGatewayCustomError {
   /**
    * Create a ApplicationGatewayCustomError.
    * @member {string} [statusCode] Status code of the application gateway
-   * customer error. Possible values include: '403', '502'
+   * customer error. Possible values include: 'HttpStatus403', 'HttpStatus502'
    * @member {string} [customErrorPageUrl] Error page URL of the application
    * gateway customer error.
    */
diff --git a/lib/services/networkManagement2/lib/models/applicationGatewayHttpListener.js b/lib/services/networkManagement2/lib/models/applicationGatewayHttpListener.js
index 17b6862071..085411c204 100644
--- a/lib/services/networkManagement2/lib/models/applicationGatewayHttpListener.js
+++ b/lib/services/networkManagement2/lib/models/applicationGatewayHttpListener.js
@@ -37,7 +37,7 @@ class ApplicationGatewayHttpListener extends models['SubResource'] {
    * @member {string} [provisioningState] Provisioning state of the HTTP
    * listener resource. Possible values are: 'Updating', 'Deleting', and
    * 'Failed'.
-   * @member {array} [customErrorConfiguration] Custom error configurations of
+   * @member {array} [customErrorConfigurations] Custom error configurations of
    * the HTTP listener.
    * @member {string} [name] Name of the HTTP listener that is unique within an
    * Application Gateway.
@@ -122,9 +122,9 @@ class ApplicationGatewayHttpListener extends models['SubResource'] {
               name: 'String'
             }
           },
-          customErrorConfiguration: {
+          customErrorConfigurations: {
             required: false,
-            serializedName: 'properties.customErrorConfiguration',
+            serializedName: 'properties.customErrorConfigurations',
             type: {
               name: 'Sequence',
               element: {
diff --git a/lib/services/networkManagement2/lib/models/index.d.ts b/lib/services/networkManagement2/lib/models/index.d.ts
index 2e53b111ef..b2774cd268 100644
--- a/lib/services/networkManagement2/lib/models/index.d.ts
+++ b/lib/services/networkManagement2/lib/models/index.d.ts
@@ -4072,7 +4072,7 @@ export interface ApplicationGatewayFrontendPort extends SubResource {
  * Customer error of an application gateway.
  *
  * @member {string} [statusCode] Status code of the application gateway
- * customer error. Possible values include: '403', '502'
+ * customer error. Possible values include: 'HttpStatus403', 'HttpStatus502'
  * @member {string} [customErrorPageUrl] Error page URL of the application
  * gateway customer error.
  */
@@ -4103,7 +4103,7 @@ export interface ApplicationGatewayCustomError {
  * is https. Enables SNI for multi-hosting.
  * @member {string} [provisioningState] Provisioning state of the HTTP listener
  * resource. Possible values are: 'Updating', 'Deleting', and 'Failed'.
- * @member {array} [customErrorConfiguration] Custom error configurations of
+ * @member {array} [customErrorConfigurations] Custom error configurations of
  * the HTTP listener.
  * @member {string} [name] Name of the HTTP listener that is unique within an
  * Application Gateway.
@@ -4119,7 +4119,7 @@ export interface ApplicationGatewayHttpListener extends SubResource {
   sslCertificate?: SubResource;
   requireServerNameIndication?: boolean;
   provisioningState?: string;
-  customErrorConfiguration?: ApplicationGatewayCustomError[];
+  customErrorConfigurations?: ApplicationGatewayCustomError[];
   name?: string;
   etag?: string;
   type?: string;
@@ -4528,7 +4528,7 @@ export interface ApplicationGatewayAutoscaleConfiguration {
  * gateway resource.
  * @member {string} [provisioningState] Provisioning state of the application
  * gateway resource. Possible values are: 'Updating', 'Deleting', and 'Failed'.
- * @member {array} [customErrorConfiguration] Custom error configurations of
+ * @member {array} [customErrorConfigurations] Custom error configurations of
  * the application gateway resource.
  * @member {string} [etag] A unique read-only string that changes whenever the
  * resource is updated.
@@ -4558,7 +4558,7 @@ export interface ApplicationGateway extends Resource {
   autoscaleConfiguration?: ApplicationGatewayAutoscaleConfiguration;
   resourceGuid?: string;
   provisioningState?: string;
-  customErrorConfiguration?: ApplicationGatewayCustomError[];
+  customErrorConfigurations?: ApplicationGatewayCustomError[];
   etag?: string;
   zones?: string[];
 }
diff --git a/lib/services/networkManagement2/lib/operations/applicationGateways.js b/lib/services/networkManagement2/lib/operations/applicationGateways.js
index a0d560e9e9..a6b9b9c2c3 100644
--- a/lib/services/networkManagement2/lib/operations/applicationGateways.js
+++ b/lib/services/networkManagement2/lib/operations/applicationGateways.js
@@ -361,7 +361,7 @@ function _get(resourceGroupName, applicationGatewayName, options, callback) {
  * application gateway resource. Possible values are: 'Updating', 'Deleting',
  * and 'Failed'.
  *
- * @param {array} [parameters.customErrorConfiguration] Custom error
+ * @param {array} [parameters.customErrorConfigurations] Custom error
  * configurations of the application gateway resource.
  *
  * @param {string} [parameters.etag] A unique read-only string that changes
@@ -1809,7 +1809,7 @@ function _beginDeleteMethod(resourceGroupName, applicationGatewayName, options,
  * application gateway resource. Possible values are: 'Updating', 'Deleting',
  * and 'Failed'.
  *
- * @param {array} [parameters.customErrorConfiguration] Custom error
+ * @param {array} [parameters.customErrorConfigurations] Custom error
  * configurations of the application gateway resource.
  *
  * @param {string} [parameters.etag] A unique read-only string that changes
@@ -3292,7 +3292,7 @@ class ApplicationGateways {
    * application gateway resource. Possible values are: 'Updating', 'Deleting',
    * and 'Failed'.
    *
-   * @param {array} [parameters.customErrorConfiguration] Custom error
+   * @param {array} [parameters.customErrorConfigurations] Custom error
    * configurations of the application gateway resource.
    *
    * @param {string} [parameters.etag] A unique read-only string that changes
@@ -3472,7 +3472,7 @@ class ApplicationGateways {
    * application gateway resource. Possible values are: 'Updating', 'Deleting',
    * and 'Failed'.
    *
-   * @param {array} [parameters.customErrorConfiguration] Custom error
+   * @param {array} [parameters.customErrorConfigurations] Custom error
    * configurations of the application gateway resource.
    *
    * @param {string} [parameters.etag] A unique read-only string that changes
@@ -4604,7 +4604,7 @@ class ApplicationGateways {
    * application gateway resource. Possible values are: 'Updating', 'Deleting',
    * and 'Failed'.
    *
-   * @param {array} [parameters.customErrorConfiguration] Custom error
+   * @param {array} [parameters.customErrorConfigurations] Custom error
    * configurations of the application gateway resource.
    *
    * @param {string} [parameters.etag] A unique read-only string that changes
@@ -4784,7 +4784,7 @@ class ApplicationGateways {
    * application gateway resource. Possible values are: 'Updating', 'Deleting',
    * and 'Failed'.
    *
-   * @param {array} [parameters.customErrorConfiguration] Custom error
+   * @param {array} [parameters.customErrorConfigurations] Custom error
    * configurations of the application gateway resource.
    *
    * @param {string} [parameters.etag] A unique read-only string that changes
diff --git a/lib/services/networkManagement2/lib/operations/index.d.ts b/lib/services/networkManagement2/lib/operations/index.d.ts
index b77d8f842c..aa24864ac4 100644
--- a/lib/services/networkManagement2/lib/operations/index.d.ts
+++ b/lib/services/networkManagement2/lib/operations/index.d.ts
@@ -278,7 +278,7 @@ export interface ApplicationGateways {
      * application gateway resource. Possible values are: 'Updating', 'Deleting',
      * and 'Failed'.
      *
-     * @param {array} [parameters.customErrorConfiguration] Custom error
+     * @param {array} [parameters.customErrorConfigurations] Custom error
      * configurations of the application gateway resource.
      *
      * @param {string} [parameters.etag] A unique read-only string that changes
@@ -446,7 +446,7 @@ export interface ApplicationGateways {
      * application gateway resource. Possible values are: 'Updating', 'Deleting',
      * and 'Failed'.
      *
-     * @param {array} [parameters.customErrorConfiguration] Custom error
+     * @param {array} [parameters.customErrorConfigurations] Custom error
      * configurations of the application gateway resource.
      *
      * @param {string} [parameters.etag] A unique read-only string that changes
@@ -1266,7 +1266,7 @@ export interface ApplicationGateways {
      * application gateway resource. Possible values are: 'Updating', 'Deleting',
      * and 'Failed'.
      *
-     * @param {array} [parameters.customErrorConfiguration] Custom error
+     * @param {array} [parameters.customErrorConfigurations] Custom error
      * configurations of the application gateway resource.
      *
      * @param {string} [parameters.etag] A unique read-only string that changes
@@ -1434,7 +1434,7 @@ export interface ApplicationGateways {
      * application gateway resource. Possible values are: 'Updating', 'Deleting',
      * and 'Failed'.
      *
-     * @param {array} [parameters.customErrorConfiguration] Custom error
+     * @param {array} [parameters.customErrorConfigurations] Custom error
      * configurations of the application gateway resource.
      *
      * @param {string} [parameters.etag] A unique read-only string that changes