diff --git a/lib/services/networkManagement2/lib/models/flowLogFormatParameters.js b/lib/services/networkManagement2/lib/models/flowLogFormatParameters.js
new file mode 100644
index 0000000000..7364e7131d
--- /dev/null
+++ b/lib/services/networkManagement2/lib/models/flowLogFormatParameters.js
@@ -0,0 +1,63 @@
+/*
+ * 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';
+
+/**
+ * Parameters that define the flow log format.
+ *
+ */
+class FlowLogFormatParameters {
+  /**
+   * Create a FlowLogFormatParameters.
+   * @member {string} [type] The file type of flow log. Possible values
+   * include: 'JSON'
+   * @member {number} [version] The version (revision) of the flow log. Default
+   * value: 0 .
+   */
+  constructor() {
+  }
+
+  /**
+   * Defines the metadata of FlowLogFormatParameters
+   *
+   * @returns {object} metadata of FlowLogFormatParameters
+   *
+   */
+  mapper() {
+    return {
+      required: false,
+      serializedName: 'FlowLogFormatParameters',
+      type: {
+        name: 'Composite',
+        className: 'FlowLogFormatParameters',
+        modelProperties: {
+          type: {
+            required: false,
+            serializedName: 'type',
+            type: {
+              name: 'String'
+            }
+          },
+          version: {
+            required: false,
+            serializedName: 'version',
+            defaultValue: 0,
+            type: {
+              name: 'Number'
+            }
+          }
+        }
+      }
+    };
+  }
+}
+
+module.exports = FlowLogFormatParameters;
diff --git a/lib/services/networkManagement2/lib/models/flowLogInformation.js b/lib/services/networkManagement2/lib/models/flowLogInformation.js
index d7161fb690..a3089aecb4 100644
--- a/lib/services/networkManagement2/lib/models/flowLogInformation.js
+++ b/lib/services/networkManagement2/lib/models/flowLogInformation.js
@@ -28,6 +28,10 @@ class FlowLogInformation {
    * records.
    * @member {boolean} [retentionPolicy.enabled] Flag to enable/disable
    * retention.
+   * @member {object} [format]
+   * @member {string} [format.type] The file type of flow log. Possible values
+   * include: 'JSON'
+   * @member {number} [format.version] The version (revision) of the flow log.
    * @member {object} [flowAnalyticsConfiguration]
    * @member {object}
    * [flowAnalyticsConfiguration.networkWatcherFlowAnalyticsConfiguration]
@@ -90,6 +94,14 @@ class FlowLogInformation {
               className: 'RetentionPolicyParameters'
             }
           },
+          format: {
+            required: false,
+            serializedName: 'properties.format',
+            type: {
+              name: 'Composite',
+              className: 'FlowLogFormatParameters'
+            }
+          },
           flowAnalyticsConfiguration: {
             required: false,
             serializedName: 'flowAnalyticsConfiguration',
diff --git a/lib/services/networkManagement2/lib/models/index.d.ts b/lib/services/networkManagement2/lib/models/index.d.ts
index 614594424a..dc5f4e40ee 100644
--- a/lib/services/networkManagement2/lib/models/index.d.ts
+++ b/lib/services/networkManagement2/lib/models/index.d.ts
@@ -7323,6 +7323,22 @@ export interface RetentionPolicyParameters {
   enabled?: boolean;
 }
 
+/**
+ * @class
+ * Initializes a new instance of the FlowLogFormatParameters class.
+ * @constructor
+ * Parameters that define the flow log format.
+ *
+ * @member {string} [type] The file type of flow log. Possible values include:
+ * 'JSON'
+ * @member {number} [version] The version (revision) of the flow log. Default
+ * value: 0 .
+ */
+export interface FlowLogFormatParameters {
+  type?: string;
+  version?: number;
+}
+
 /**
  * @class
  * Initializes a new instance of the FlowLogStatusParameters class.
@@ -7393,6 +7409,10 @@ export interface TrafficAnalyticsProperties {
  * records.
  * @member {boolean} [retentionPolicy.enabled] Flag to enable/disable
  * retention.
+ * @member {object} [format]
+ * @member {string} [format.type] The file type of flow log. Possible values
+ * include: 'JSON'
+ * @member {number} [format.version] The version (revision) of the flow log.
  * @member {object} [flowAnalyticsConfiguration]
  * @member {object}
  * [flowAnalyticsConfiguration.networkWatcherFlowAnalyticsConfiguration]
@@ -7414,6 +7434,7 @@ export interface FlowLogInformation {
   storageId: string;
   enabled: boolean;
   retentionPolicy?: RetentionPolicyParameters;
+  format?: FlowLogFormatParameters;
   flowAnalyticsConfiguration?: TrafficAnalyticsProperties;
 }
 
diff --git a/lib/services/networkManagement2/lib/models/index.js b/lib/services/networkManagement2/lib/models/index.js
index db5eceb082..eb46cbe593 100644
--- a/lib/services/networkManagement2/lib/models/index.js
+++ b/lib/services/networkManagement2/lib/models/index.js
@@ -185,6 +185,7 @@ exports.TroubleshootingRecommendedActions = require('./troubleshootingRecommende
 exports.TroubleshootingDetails = require('./troubleshootingDetails');
 exports.TroubleshootingResult = require('./troubleshootingResult');
 exports.RetentionPolicyParameters = require('./retentionPolicyParameters');
+exports.FlowLogFormatParameters = require('./flowLogFormatParameters');
 exports.FlowLogStatusParameters = require('./flowLogStatusParameters');
 exports.TrafficAnalyticsConfigurationProperties = require('./trafficAnalyticsConfigurationProperties');
 exports.TrafficAnalyticsProperties = require('./trafficAnalyticsProperties');
diff --git a/lib/services/networkManagement2/lib/operations/index.d.ts b/lib/services/networkManagement2/lib/operations/index.d.ts
index 7386f3d097..79d8a56aac 100644
--- a/lib/services/networkManagement2/lib/operations/index.d.ts
+++ b/lib/services/networkManagement2/lib/operations/index.d.ts
@@ -22696,6 +22696,14 @@ export interface NetworkWatchers {
      * @param {boolean} [parameters.retentionPolicy.enabled] Flag to enable/disable
      * retention.
      *
+     * @param {object} [parameters.format]
+     *
+     * @param {string} [parameters.format.type] The file type of flow log. Possible
+     * values include: 'JSON'
+     *
+     * @param {number} [parameters.format.version] The version (revision) of the
+     * flow log.
+     *
      * @param {object} [parameters.flowAnalyticsConfiguration]
      *
      * @param {object}
@@ -22758,6 +22766,14 @@ export interface NetworkWatchers {
      * @param {boolean} [parameters.retentionPolicy.enabled] Flag to enable/disable
      * retention.
      *
+     * @param {object} [parameters.format]
+     *
+     * @param {string} [parameters.format.type] The file type of flow log. Possible
+     * values include: 'JSON'
+     *
+     * @param {number} [parameters.format.version] The version (revision) of the
+     * flow log.
+     *
      * @param {object} [parameters.flowAnalyticsConfiguration]
      *
      * @param {object}
@@ -23835,6 +23851,14 @@ export interface NetworkWatchers {
      * @param {boolean} [parameters.retentionPolicy.enabled] Flag to enable/disable
      * retention.
      *
+     * @param {object} [parameters.format]
+     *
+     * @param {string} [parameters.format.type] The file type of flow log. Possible
+     * values include: 'JSON'
+     *
+     * @param {number} [parameters.format.version] The version (revision) of the
+     * flow log.
+     *
      * @param {object} [parameters.flowAnalyticsConfiguration]
      *
      * @param {object}
@@ -23897,6 +23921,14 @@ export interface NetworkWatchers {
      * @param {boolean} [parameters.retentionPolicy.enabled] Flag to enable/disable
      * retention.
      *
+     * @param {object} [parameters.format]
+     *
+     * @param {string} [parameters.format.type] The file type of flow log. Possible
+     * values include: 'JSON'
+     *
+     * @param {number} [parameters.format.version] The version (revision) of the
+     * flow log.
+     *
      * @param {object} [parameters.flowAnalyticsConfiguration]
      *
      * @param {object}
diff --git a/lib/services/networkManagement2/lib/operations/networkWatchers.js b/lib/services/networkManagement2/lib/operations/networkWatchers.js
index 5b0bb50952..0b7a4cdf67 100644
--- a/lib/services/networkManagement2/lib/operations/networkWatchers.js
+++ b/lib/services/networkManagement2/lib/operations/networkWatchers.js
@@ -1513,6 +1513,14 @@ function _getTroubleshootingResult(resourceGroupName, networkWatcherName, parame
  * @param {boolean} [parameters.retentionPolicy.enabled] Flag to enable/disable
  * retention.
  *
+ * @param {object} [parameters.format]
+ *
+ * @param {string} [parameters.format.type] The file type of flow log. Possible
+ * values include: 'JSON'
+ *
+ * @param {number} [parameters.format.version] The version (revision) of the
+ * flow log.
+ *
  * @param {object} [parameters.flowAnalyticsConfiguration]
  *
  * @param {object}
@@ -3215,6 +3223,14 @@ function _beginGetTroubleshootingResult(resourceGroupName, networkWatcherName, p
  * @param {boolean} [parameters.retentionPolicy.enabled] Flag to enable/disable
  * retention.
  *
+ * @param {object} [parameters.format]
+ *
+ * @param {string} [parameters.format.type] The file type of flow log. Possible
+ * values include: 'JSON'
+ *
+ * @param {number} [parameters.format.version] The version (revision) of the
+ * flow log.
+ *
  * @param {object} [parameters.flowAnalyticsConfiguration]
  *
  * @param {object}
@@ -5693,6 +5709,14 @@ class NetworkWatchers {
    * @param {boolean} [parameters.retentionPolicy.enabled] Flag to enable/disable
    * retention.
    *
+   * @param {object} [parameters.format]
+   *
+   * @param {string} [parameters.format.type] The file type of flow log. Possible
+   * values include: 'JSON'
+   *
+   * @param {number} [parameters.format.version] The version (revision) of the
+   * flow log.
+   *
    * @param {object} [parameters.flowAnalyticsConfiguration]
    *
    * @param {object}
@@ -5767,6 +5791,14 @@ class NetworkWatchers {
    * @param {boolean} [parameters.retentionPolicy.enabled] Flag to enable/disable
    * retention.
    *
+   * @param {object} [parameters.format]
+   *
+   * @param {string} [parameters.format.type] The file type of flow log. Possible
+   * values include: 'JSON'
+   *
+   * @param {number} [parameters.format.version] The version (revision) of the
+   * flow log.
+   *
    * @param {object} [parameters.flowAnalyticsConfiguration]
    *
    * @param {object}
@@ -7156,6 +7188,14 @@ class NetworkWatchers {
    * @param {boolean} [parameters.retentionPolicy.enabled] Flag to enable/disable
    * retention.
    *
+   * @param {object} [parameters.format]
+   *
+   * @param {string} [parameters.format.type] The file type of flow log. Possible
+   * values include: 'JSON'
+   *
+   * @param {number} [parameters.format.version] The version (revision) of the
+   * flow log.
+   *
    * @param {object} [parameters.flowAnalyticsConfiguration]
    *
    * @param {object}
@@ -7230,6 +7270,14 @@ class NetworkWatchers {
    * @param {boolean} [parameters.retentionPolicy.enabled] Flag to enable/disable
    * retention.
    *
+   * @param {object} [parameters.format]
+   *
+   * @param {string} [parameters.format.type] The file type of flow log. Possible
+   * values include: 'JSON'
+   *
+   * @param {number} [parameters.format.version] The version (revision) of the
+   * flow log.
+   *
    * @param {object} [parameters.flowAnalyticsConfiguration]
    *
    * @param {object}