diff --git a/lib/services/authorizationManagement/LICENSE.txt b/lib/services/authorizationManagement/LICENSE.txt
index 5431ba98b9..8f3d856145 100644
--- a/lib/services/authorizationManagement/LICENSE.txt
+++ b/lib/services/authorizationManagement/LICENSE.txt
@@ -1,6 +1,6 @@
 The MIT License (MIT)
 
-Copyright (c) 2018 Microsoft
+Copyright (c) 2019 Microsoft
 
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal
diff --git a/lib/services/authorizationManagement/lib/models/index.d.ts b/lib/services/authorizationManagement/lib/models/index.d.ts
index f92f1ab7c6..1167897f51 100644
--- a/lib/services/authorizationManagement/lib/models/index.d.ts
+++ b/lib/services/authorizationManagement/lib/models/index.d.ts
@@ -128,7 +128,7 @@ export interface RoleAssignmentFilter {
    */
   principalId?: string;
   /**
-   * The Delegation flag for the roleassignment
+   * The Delegation flag for the role assignment
    */
   canDelegate?: boolean;
 }
@@ -162,7 +162,13 @@ export interface RoleAssignment {
    */
   principalId?: string;
   /**
-   * The Delegation flag for the roleassignment
+   * The principal type of the assigned principal ID. Possible values include: 'User', 'Group',
+   * 'ServicePrincipal', 'Unknown', 'DirectoryRoleTemplate', 'ForeignGroup', 'Application', 'MSI',
+   * 'DirectoryObjectOrGroup', 'Everyone'
+   */
+  principalType?: string;
+  /**
+   * The Delegation flag for the role assignment
    */
   canDelegate?: boolean;
 }
@@ -187,7 +193,7 @@ export interface RoleAssignmentCreateParameters {
    */
   principalType?: string;
   /**
-   * The delgation flag used for creating a role assignment
+   * The delegation flag used for creating a role assignment
    */
   canDelegate?: boolean;
 }
diff --git a/lib/services/authorizationManagement/lib/models/roleAssignment.js b/lib/services/authorizationManagement/lib/models/roleAssignment.js
index 4defec9cbc..586340b8aa 100644
--- a/lib/services/authorizationManagement/lib/models/roleAssignment.js
+++ b/lib/services/authorizationManagement/lib/models/roleAssignment.js
@@ -23,8 +23,12 @@ class RoleAssignment {
    * @property {string} [scope] The role assignment scope.
    * @property {string} [roleDefinitionId] The role definition ID.
    * @property {string} [principalId] The principal ID.
-   * @property {boolean} [canDelegate] The Delegation flag for the
-   * roleassignment
+   * @property {string} [principalType] The principal type of the assigned
+   * principal ID. Possible values include: 'User', 'Group',
+   * 'ServicePrincipal', 'Unknown', 'DirectoryRoleTemplate', 'ForeignGroup',
+   * 'Application', 'MSI', 'DirectoryObjectOrGroup', 'Everyone'
+   * @property {boolean} [canDelegate] The Delegation flag for the role
+   * assignment
    */
   constructor() {
   }
@@ -88,6 +92,13 @@ class RoleAssignment {
               name: 'String'
             }
           },
+          principalType: {
+            required: false,
+            serializedName: 'properties.principalType',
+            type: {
+              name: 'String'
+            }
+          },
           canDelegate: {
             required: false,
             serializedName: 'properties.canDelegate',
diff --git a/lib/services/authorizationManagement/lib/models/roleAssignmentCreateParameters.js b/lib/services/authorizationManagement/lib/models/roleAssignmentCreateParameters.js
index bb7d4c3259..0852189d01 100644
--- a/lib/services/authorizationManagement/lib/models/roleAssignmentCreateParameters.js
+++ b/lib/services/authorizationManagement/lib/models/roleAssignmentCreateParameters.js
@@ -26,7 +26,7 @@ class RoleAssignmentCreateParameters {
    * principal ID. Possible values include: 'User', 'Group',
    * 'ServicePrincipal', 'Unknown', 'DirectoryRoleTemplate', 'ForeignGroup',
    * 'Application', 'MSI', 'DirectoryObjectOrGroup', 'Everyone'
-   * @property {boolean} [canDelegate] The delgation flag used for creating a
+   * @property {boolean} [canDelegate] The delegation flag used for creating a
    * role assignment
    */
   constructor() {
diff --git a/lib/services/authorizationManagement/lib/models/roleAssignmentFilter.js b/lib/services/authorizationManagement/lib/models/roleAssignmentFilter.js
index bae992d105..866c46058f 100644
--- a/lib/services/authorizationManagement/lib/models/roleAssignmentFilter.js
+++ b/lib/services/authorizationManagement/lib/models/roleAssignmentFilter.js
@@ -19,8 +19,8 @@ class RoleAssignmentFilter {
    * Create a RoleAssignmentFilter.
    * @property {string} [principalId] Returns role assignment of the specific
    * principal.
-   * @property {boolean} [canDelegate] The Delegation flag for the
-   * roleassignment
+   * @property {boolean} [canDelegate] The Delegation flag for the role
+   * assignment
    */
   constructor() {
   }
diff --git a/lib/services/authorizationManagement/lib/operations/index.d.ts b/lib/services/authorizationManagement/lib/operations/index.d.ts
index 0fb02617dd..ff54b00e52 100644
--- a/lib/services/authorizationManagement/lib/operations/index.d.ts
+++ b/lib/services/authorizationManagement/lib/operations/index.d.ts
@@ -570,7 +570,7 @@ export interface RoleAssignments {
      * 'ServicePrincipal', 'Unknown', 'DirectoryRoleTemplate', 'ForeignGroup',
      * 'Application', 'MSI', 'DirectoryObjectOrGroup', 'Everyone'
      *
-     * @param {boolean} [parameters.canDelegate] The delgation flag used for
+     * @param {boolean} [parameters.canDelegate] The delegation flag used for
      * creating a role assignment
      *
      * @param {object} [options] Optional Parameters.
@@ -614,7 +614,7 @@ export interface RoleAssignments {
      * 'ServicePrincipal', 'Unknown', 'DirectoryRoleTemplate', 'ForeignGroup',
      * 'Application', 'MSI', 'DirectoryObjectOrGroup', 'Everyone'
      *
-     * @param {boolean} [parameters.canDelegate] The delgation flag used for
+     * @param {boolean} [parameters.canDelegate] The delegation flag used for
      * creating a role assignment
      *
      * @param {object} [options] Optional Parameters.
@@ -782,7 +782,7 @@ export interface RoleAssignments {
      * 'ServicePrincipal', 'Unknown', 'DirectoryRoleTemplate', 'ForeignGroup',
      * 'Application', 'MSI', 'DirectoryObjectOrGroup', 'Everyone'
      *
-     * @param {boolean} [parameters.canDelegate] The delgation flag used for
+     * @param {boolean} [parameters.canDelegate] The delegation flag used for
      * creating a role assignment
      *
      * @param {object} [options] Optional Parameters.
@@ -817,7 +817,7 @@ export interface RoleAssignments {
      * 'ServicePrincipal', 'Unknown', 'DirectoryRoleTemplate', 'ForeignGroup',
      * 'Application', 'MSI', 'DirectoryObjectOrGroup', 'Everyone'
      *
-     * @param {boolean} [parameters.canDelegate] The delgation flag used for
+     * @param {boolean} [parameters.canDelegate] The delegation flag used for
      * creating a role assignment
      *
      * @param {object} [options] Optional Parameters.
diff --git a/lib/services/authorizationManagement/lib/operations/roleAssignments.js b/lib/services/authorizationManagement/lib/operations/roleAssignments.js
index 733313d390..a14a5c58a6 100644
--- a/lib/services/authorizationManagement/lib/operations/roleAssignments.js
+++ b/lib/services/authorizationManagement/lib/operations/roleAssignments.js
@@ -508,7 +508,7 @@ function _deleteMethod(scope, roleAssignmentName, options, callback) {
  * 'ServicePrincipal', 'Unknown', 'DirectoryRoleTemplate', 'ForeignGroup',
  * 'Application', 'MSI', 'DirectoryObjectOrGroup', 'Everyone'
  *
- * @param {boolean} [parameters.canDelegate] The delgation flag used for
+ * @param {boolean} [parameters.canDelegate] The delegation flag used for
  * creating a role assignment
  *
  * @param {object} [options] Optional Parameters.
@@ -951,7 +951,7 @@ function _deleteById(roleId, options, callback) {
  * 'ServicePrincipal', 'Unknown', 'DirectoryRoleTemplate', 'ForeignGroup',
  * 'Application', 'MSI', 'DirectoryObjectOrGroup', 'Everyone'
  *
- * @param {boolean} [parameters.canDelegate] The delgation flag used for
+ * @param {boolean} [parameters.canDelegate] The delegation flag used for
  * creating a role assignment
  *
  * @param {object} [options] Optional Parameters.
@@ -2380,7 +2380,7 @@ class RoleAssignments {
    * 'ServicePrincipal', 'Unknown', 'DirectoryRoleTemplate', 'ForeignGroup',
    * 'Application', 'MSI', 'DirectoryObjectOrGroup', 'Everyone'
    *
-   * @param {boolean} [parameters.canDelegate] The delgation flag used for
+   * @param {boolean} [parameters.canDelegate] The delegation flag used for
    * creating a role assignment
    *
    * @param {object} [options] Optional Parameters.
@@ -2436,7 +2436,7 @@ class RoleAssignments {
    * 'ServicePrincipal', 'Unknown', 'DirectoryRoleTemplate', 'ForeignGroup',
    * 'Application', 'MSI', 'DirectoryObjectOrGroup', 'Everyone'
    *
-   * @param {boolean} [parameters.canDelegate] The delgation flag used for
+   * @param {boolean} [parameters.canDelegate] The delegation flag used for
    * creating a role assignment
    *
    * @param {object} [options] Optional Parameters.
@@ -2673,7 +2673,7 @@ class RoleAssignments {
    * 'ServicePrincipal', 'Unknown', 'DirectoryRoleTemplate', 'ForeignGroup',
    * 'Application', 'MSI', 'DirectoryObjectOrGroup', 'Everyone'
    *
-   * @param {boolean} [parameters.canDelegate] The delgation flag used for
+   * @param {boolean} [parameters.canDelegate] The delegation flag used for
    * creating a role assignment
    *
    * @param {object} [options] Optional Parameters.
@@ -2720,7 +2720,7 @@ class RoleAssignments {
    * 'ServicePrincipal', 'Unknown', 'DirectoryRoleTemplate', 'ForeignGroup',
    * 'Application', 'MSI', 'DirectoryObjectOrGroup', 'Everyone'
    *
-   * @param {boolean} [parameters.canDelegate] The delgation flag used for
+   * @param {boolean} [parameters.canDelegate] The delegation flag used for
    * creating a role assignment
    *
    * @param {object} [options] Optional Parameters.
diff --git a/lib/services/authorizationManagement/package.json b/lib/services/authorizationManagement/package.json
index a086f672b1..e71f07b983 100644
--- a/lib/services/authorizationManagement/package.json
+++ b/lib/services/authorizationManagement/package.json
@@ -2,7 +2,7 @@
   "name": "azure-arm-authorization",
   "author": "Microsoft Corporation",
   "description": "AuthorizationManagementClient Library with typescript type definitions for node",
-  "version": "8.3.1",
+  "version": "8.4.0",
   "dependencies": {
     "ms-rest": "^2.3.3",
     "ms-rest-azure": "^2.5.5"