diff --git a/lib/services/containerservicesManagement/LICENSE.txt b/lib/services/containerservicesManagement/LICENSE.txt
index 5431ba98b9..8f3d856145 100644
--- a/lib/services/containerservicesManagement/LICENSE.txt
+++ b/lib/services/containerservicesManagement/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/containerservicesManagement/lib/operations/managedClusters.js b/lib/services/containerservicesManagement/lib/operations/managedClusters.js
index 1d5d555809..f0bdadc2e2 100644
--- a/lib/services/containerservicesManagement/lib/operations/managedClusters.js
+++ b/lib/services/containerservicesManagement/lib/operations/managedClusters.js
@@ -196,6 +196,12 @@ function _listByResourceGroup(resourceGroupName, options, callback) {
     if (resourceGroupName === null || resourceGroupName === undefined || typeof resourceGroupName.valueOf() !== 'string') {
       throw new Error('resourceGroupName cannot be null or undefined and it must be of type string.');
     }
+    if (resourceGroupName !== null && resourceGroupName !== undefined) {
+      if (resourceGroupName.length < 1)
+      {
+        throw new Error('"resourceGroupName" 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.');
     }
@@ -339,6 +345,12 @@ function _getUpgradeProfile(resourceGroupName, resourceName, options, callback)
     if (resourceGroupName === null || resourceGroupName === undefined || typeof resourceGroupName.valueOf() !== 'string') {
       throw new Error('resourceGroupName cannot be null or undefined and it must be of type string.');
     }
+    if (resourceGroupName !== null && resourceGroupName !== undefined) {
+      if (resourceGroupName.length < 1)
+      {
+        throw new Error('"resourceGroupName" should satisfy the constraint - "MinLength": 1');
+      }
+    }
     if (resourceName === null || resourceName === undefined || typeof resourceName.valueOf() !== 'string') {
       throw new Error('resourceName cannot be null or undefined and it must be of type string.');
     }
@@ -489,6 +501,12 @@ function _getAccessProfile(resourceGroupName, resourceName, roleName, options, c
     if (resourceGroupName === null || resourceGroupName === undefined || typeof resourceGroupName.valueOf() !== 'string') {
       throw new Error('resourceGroupName cannot be null or undefined and it must be of type string.');
     }
+    if (resourceGroupName !== null && resourceGroupName !== undefined) {
+      if (resourceGroupName.length < 1)
+      {
+        throw new Error('"resourceGroupName" should satisfy the constraint - "MinLength": 1');
+      }
+    }
     if (resourceName === null || resourceName === undefined || typeof resourceName.valueOf() !== 'string') {
       throw new Error('resourceName cannot be null or undefined and it must be of type string.');
     }
@@ -639,6 +657,12 @@ function _listClusterAdminCredentials(resourceGroupName, resourceName, options,
     if (resourceGroupName === null || resourceGroupName === undefined || typeof resourceGroupName.valueOf() !== 'string') {
       throw new Error('resourceGroupName cannot be null or undefined and it must be of type string.');
     }
+    if (resourceGroupName !== null && resourceGroupName !== undefined) {
+      if (resourceGroupName.length < 1)
+      {
+        throw new Error('"resourceGroupName" should satisfy the constraint - "MinLength": 1');
+      }
+    }
     if (resourceName === null || resourceName === undefined || typeof resourceName.valueOf() !== 'string') {
       throw new Error('resourceName cannot be null or undefined and it must be of type string.');
     }
@@ -785,6 +809,12 @@ function _listClusterUserCredentials(resourceGroupName, resourceName, options, c
     if (resourceGroupName === null || resourceGroupName === undefined || typeof resourceGroupName.valueOf() !== 'string') {
       throw new Error('resourceGroupName cannot be null or undefined and it must be of type string.');
     }
+    if (resourceGroupName !== null && resourceGroupName !== undefined) {
+      if (resourceGroupName.length < 1)
+      {
+        throw new Error('"resourceGroupName" should satisfy the constraint - "MinLength": 1');
+      }
+    }
     if (resourceName === null || resourceName === undefined || typeof resourceName.valueOf() !== 'string') {
       throw new Error('resourceName cannot be null or undefined and it must be of type string.');
     }
@@ -931,6 +961,12 @@ function _get(resourceGroupName, resourceName, options, callback) {
     if (resourceGroupName === null || resourceGroupName === undefined || typeof resourceGroupName.valueOf() !== 'string') {
       throw new Error('resourceGroupName cannot be null or undefined and it must be of type string.');
     }
+    if (resourceGroupName !== null && resourceGroupName !== undefined) {
+      if (resourceGroupName.length < 1)
+      {
+        throw new Error('"resourceGroupName" should satisfy the constraint - "MinLength": 1');
+      }
+    }
     if (resourceName === null || resourceName === undefined || typeof resourceName.valueOf() !== 'string') {
       throw new Error('resourceName cannot be null or undefined and it must be of type string.');
     }
@@ -1660,6 +1696,12 @@ function _beginCreateOrUpdate(resourceGroupName, resourceName, parameters, optio
     if (resourceGroupName === null || resourceGroupName === undefined || typeof resourceGroupName.valueOf() !== 'string') {
       throw new Error('resourceGroupName cannot be null or undefined and it must be of type string.');
     }
+    if (resourceGroupName !== null && resourceGroupName !== undefined) {
+      if (resourceGroupName.length < 1)
+      {
+        throw new Error('"resourceGroupName" should satisfy the constraint - "MinLength": 1');
+      }
+    }
     if (resourceName === null || resourceName === undefined || typeof resourceName.valueOf() !== 'string') {
       throw new Error('resourceName cannot be null or undefined and it must be of type string.');
     }
@@ -1844,6 +1886,12 @@ function _beginUpdateTags(resourceGroupName, resourceName, parameters, options,
     if (resourceGroupName === null || resourceGroupName === undefined || typeof resourceGroupName.valueOf() !== 'string') {
       throw new Error('resourceGroupName cannot be null or undefined and it must be of type string.');
     }
+    if (resourceGroupName !== null && resourceGroupName !== undefined) {
+      if (resourceGroupName.length < 1)
+      {
+        throw new Error('"resourceGroupName" should satisfy the constraint - "MinLength": 1');
+      }
+    }
     if (resourceName === null || resourceName === undefined || typeof resourceName.valueOf() !== 'string') {
       throw new Error('resourceName cannot be null or undefined and it must be of type string.');
     }
@@ -2005,6 +2053,12 @@ function _beginDeleteMethod(resourceGroupName, resourceName, options, callback)
     if (resourceGroupName === null || resourceGroupName === undefined || typeof resourceGroupName.valueOf() !== 'string') {
       throw new Error('resourceGroupName cannot be null or undefined and it must be of type string.');
     }
+    if (resourceGroupName !== null && resourceGroupName !== undefined) {
+      if (resourceGroupName.length < 1)
+      {
+        throw new Error('"resourceGroupName" should satisfy the constraint - "MinLength": 1');
+      }
+    }
     if (resourceName === null || resourceName === undefined || typeof resourceName.valueOf() !== 'string') {
       throw new Error('resourceName cannot be null or undefined and it must be of type string.');
     }
@@ -2141,6 +2195,12 @@ function _beginResetServicePrincipalProfile(resourceGroupName, resourceName, par
     if (resourceGroupName === null || resourceGroupName === undefined || typeof resourceGroupName.valueOf() !== 'string') {
       throw new Error('resourceGroupName cannot be null or undefined and it must be of type string.');
     }
+    if (resourceGroupName !== null && resourceGroupName !== undefined) {
+      if (resourceGroupName.length < 1)
+      {
+        throw new Error('"resourceGroupName" should satisfy the constraint - "MinLength": 1');
+      }
+    }
     if (resourceName === null || resourceName === undefined || typeof resourceName.valueOf() !== 'string') {
       throw new Error('resourceName cannot be null or undefined and it must be of type string.');
     }
@@ -2334,6 +2394,12 @@ function _beginResetAADProfile(resourceGroupName, resourceName, parameters, opti
     if (resourceGroupName === null || resourceGroupName === undefined || typeof resourceGroupName.valueOf() !== 'string') {
       throw new Error('resourceGroupName cannot be null or undefined and it must be of type string.');
     }
+    if (resourceGroupName !== null && resourceGroupName !== undefined) {
+      if (resourceGroupName.length < 1)
+      {
+        throw new Error('"resourceGroupName" should satisfy the constraint - "MinLength": 1');
+      }
+    }
     if (resourceName === null || resourceName === undefined || typeof resourceName.valueOf() !== 'string') {
       throw new Error('resourceName cannot be null or undefined and it must be of type string.');
     }
diff --git a/lib/services/containerservicesManagement/lib/operations/openShiftManagedClusters.js b/lib/services/containerservicesManagement/lib/operations/openShiftManagedClusters.js
index d9c38192ba..31e01f3057 100644
--- a/lib/services/containerservicesManagement/lib/operations/openShiftManagedClusters.js
+++ b/lib/services/containerservicesManagement/lib/operations/openShiftManagedClusters.js
@@ -197,6 +197,12 @@ function _listByResourceGroup(resourceGroupName, options, callback) {
     if (resourceGroupName === null || resourceGroupName === undefined || typeof resourceGroupName.valueOf() !== 'string') {
       throw new Error('resourceGroupName cannot be null or undefined and it must be of type string.');
     }
+    if (resourceGroupName !== null && resourceGroupName !== undefined) {
+      if (resourceGroupName.length < 1)
+      {
+        throw new Error('"resourceGroupName" 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.');
     }
@@ -341,6 +347,12 @@ function _get(resourceGroupName, resourceName, options, callback) {
     if (resourceGroupName === null || resourceGroupName === undefined || typeof resourceGroupName.valueOf() !== 'string') {
       throw new Error('resourceGroupName cannot be null or undefined and it must be of type string.');
     }
+    if (resourceGroupName !== null && resourceGroupName !== undefined) {
+      if (resourceGroupName.length < 1)
+      {
+        throw new Error('"resourceGroupName" should satisfy the constraint - "MinLength": 1');
+      }
+    }
     if (resourceName === null || resourceName === undefined || typeof resourceName.valueOf() !== 'string') {
       throw new Error('resourceName cannot be null or undefined and it must be of type string.');
     }
@@ -882,6 +894,12 @@ function _beginCreateOrUpdate(resourceGroupName, resourceName, parameters, optio
     if (resourceGroupName === null || resourceGroupName === undefined || typeof resourceGroupName.valueOf() !== 'string') {
       throw new Error('resourceGroupName cannot be null or undefined and it must be of type string.');
     }
+    if (resourceGroupName !== null && resourceGroupName !== undefined) {
+      if (resourceGroupName.length < 1)
+      {
+        throw new Error('"resourceGroupName" should satisfy the constraint - "MinLength": 1');
+      }
+    }
     if (resourceName === null || resourceName === undefined || typeof resourceName.valueOf() !== 'string') {
       throw new Error('resourceName cannot be null or undefined and it must be of type string.');
     }
@@ -1068,6 +1086,12 @@ function _beginUpdateTags(resourceGroupName, resourceName, parameters, options,
     if (resourceGroupName === null || resourceGroupName === undefined || typeof resourceGroupName.valueOf() !== 'string') {
       throw new Error('resourceGroupName cannot be null or undefined and it must be of type string.');
     }
+    if (resourceGroupName !== null && resourceGroupName !== undefined) {
+      if (resourceGroupName.length < 1)
+      {
+        throw new Error('"resourceGroupName" should satisfy the constraint - "MinLength": 1');
+      }
+    }
     if (resourceName === null || resourceName === undefined || typeof resourceName.valueOf() !== 'string') {
       throw new Error('resourceName cannot be null or undefined and it must be of type string.');
     }
@@ -1231,6 +1255,12 @@ function _beginDeleteMethod(resourceGroupName, resourceName, options, callback)
     if (resourceGroupName === null || resourceGroupName === undefined || typeof resourceGroupName.valueOf() !== 'string') {
       throw new Error('resourceGroupName cannot be null or undefined and it must be of type string.');
     }
+    if (resourceGroupName !== null && resourceGroupName !== undefined) {
+      if (resourceGroupName.length < 1)
+      {
+        throw new Error('"resourceGroupName" should satisfy the constraint - "MinLength": 1');
+      }
+    }
     if (resourceName === null || resourceName === undefined || typeof resourceName.valueOf() !== 'string') {
       throw new Error('resourceName cannot be null or undefined and it must be of type string.');
     }