diff --git a/packages/@azure/arm-containerservice/LICENSE.txt b/packages/@azure/arm-containerservice/LICENSE.txt
index 5431ba98b936..8f3d856145c5 100644
--- a/packages/@azure/arm-containerservice/LICENSE.txt
+++ b/packages/@azure/arm-containerservice/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/packages/@azure/arm-containerservice/lib/models/parameters.ts b/packages/@azure/arm-containerservice/lib/models/parameters.ts
index 65a0237fd2dd..b645003859b9 100644
--- a/packages/@azure/arm-containerservice/lib/models/parameters.ts
+++ b/packages/@azure/arm-containerservice/lib/models/parameters.ts
@@ -99,7 +99,20 @@ export const nextPageLink: msRest.OperationURLParameter = {
   },
   skipEncoding: true
 };
-export const resourceGroupName: msRest.OperationURLParameter = {
+export const resourceGroupName0: msRest.OperationURLParameter = {
+  parameterPath: "resourceGroupName",
+  mapper: {
+    required: true,
+    serializedName: "resourceGroupName",
+    constraints: {
+      MinLength: 1
+    },
+    type: {
+      name: "String"
+    }
+  }
+};
+export const resourceGroupName1: msRest.OperationURLParameter = {
   parameterPath: "resourceGroupName",
   mapper: {
     required: true,
diff --git a/packages/@azure/arm-containerservice/lib/operations/containerServices.ts b/packages/@azure/arm-containerservice/lib/operations/containerServices.ts
index be0857225f00..9786ec71eddf 100644
--- a/packages/@azure/arm-containerservice/lib/operations/containerServices.ts
+++ b/packages/@azure/arm-containerservice/lib/operations/containerServices.ts
@@ -339,7 +339,7 @@ const getOperationSpec: msRest.OperationSpec = {
   httpMethod: "GET",
   path: "subscriptions/{subscriptionId}/resourceGroups/{resourceGroupName}/providers/Microsoft.ContainerService/containerServices/{containerServiceName}",
   urlParameters: [
-    Parameters.resourceGroupName,
+    Parameters.resourceGroupName1,
     Parameters.containerServiceName,
     Parameters.subscriptionId
   ],
@@ -364,7 +364,7 @@ const listByResourceGroupOperationSpec: msRest.OperationSpec = {
   httpMethod: "GET",
   path: "subscriptions/{subscriptionId}/resourceGroups/{resourceGroupName}/providers/Microsoft.ContainerService/containerServices",
   urlParameters: [
-    Parameters.resourceGroupName,
+    Parameters.resourceGroupName1,
     Parameters.subscriptionId
   ],
   queryParameters: [
@@ -413,7 +413,7 @@ const beginCreateOrUpdateOperationSpec: msRest.OperationSpec = {
   httpMethod: "PUT",
   path: "subscriptions/{subscriptionId}/resourceGroups/{resourceGroupName}/providers/Microsoft.ContainerService/containerServices/{containerServiceName}",
   urlParameters: [
-    Parameters.resourceGroupName,
+    Parameters.resourceGroupName1,
     Parameters.containerServiceName,
     Parameters.subscriptionId
   ],
@@ -451,7 +451,7 @@ const beginDeleteMethodOperationSpec: msRest.OperationSpec = {
   httpMethod: "DELETE",
   path: "subscriptions/{subscriptionId}/resourceGroups/{resourceGroupName}/providers/Microsoft.ContainerService/containerServices/{containerServiceName}",
   urlParameters: [
-    Parameters.resourceGroupName,
+    Parameters.resourceGroupName1,
     Parameters.containerServiceName,
     Parameters.subscriptionId
   ],
diff --git a/packages/@azure/arm-containerservice/lib/operations/managedClusters.ts b/packages/@azure/arm-containerservice/lib/operations/managedClusters.ts
index 5a3bbc4e2fa4..423e67b4af21 100644
--- a/packages/@azure/arm-containerservice/lib/operations/managedClusters.ts
+++ b/packages/@azure/arm-containerservice/lib/operations/managedClusters.ts
@@ -521,7 +521,7 @@ const listByResourceGroupOperationSpec: msRest.OperationSpec = {
   path: "subscriptions/{subscriptionId}/resourceGroups/{resourceGroupName}/providers/Microsoft.ContainerService/managedClusters",
   urlParameters: [
     Parameters.subscriptionId,
-    Parameters.resourceGroupName
+    Parameters.resourceGroupName0
   ],
   queryParameters: [
     Parameters.apiVersion3
@@ -545,7 +545,7 @@ const getUpgradeProfileOperationSpec: msRest.OperationSpec = {
   path: "subscriptions/{subscriptionId}/resourceGroups/{resourceGroupName}/providers/Microsoft.ContainerService/managedClusters/{resourceName}/upgradeProfiles/default",
   urlParameters: [
     Parameters.subscriptionId,
-    Parameters.resourceGroupName,
+    Parameters.resourceGroupName0,
     Parameters.resourceName
   ],
   queryParameters: [
@@ -570,7 +570,7 @@ const getAccessProfileOperationSpec: msRest.OperationSpec = {
   path: "subscriptions/{subscriptionId}/resourceGroups/{resourceGroupName}/providers/Microsoft.ContainerService/managedClusters/{resourceName}/accessProfiles/{roleName}/listCredential",
   urlParameters: [
     Parameters.subscriptionId,
-    Parameters.resourceGroupName,
+    Parameters.resourceGroupName0,
     Parameters.resourceName,
     Parameters.roleName
   ],
@@ -596,7 +596,7 @@ const listClusterAdminCredentialsOperationSpec: msRest.OperationSpec = {
   path: "subscriptions/{subscriptionId}/resourceGroups/{resourceGroupName}/providers/Microsoft.ContainerService/managedClusters/{resourceName}/listClusterAdminCredential",
   urlParameters: [
     Parameters.subscriptionId,
-    Parameters.resourceGroupName,
+    Parameters.resourceGroupName0,
     Parameters.resourceName
   ],
   queryParameters: [
@@ -621,7 +621,7 @@ const listClusterUserCredentialsOperationSpec: msRest.OperationSpec = {
   path: "subscriptions/{subscriptionId}/resourceGroups/{resourceGroupName}/providers/Microsoft.ContainerService/managedClusters/{resourceName}/listClusterUserCredential",
   urlParameters: [
     Parameters.subscriptionId,
-    Parameters.resourceGroupName,
+    Parameters.resourceGroupName0,
     Parameters.resourceName
   ],
   queryParameters: [
@@ -646,7 +646,7 @@ const getOperationSpec: msRest.OperationSpec = {
   path: "subscriptions/{subscriptionId}/resourceGroups/{resourceGroupName}/providers/Microsoft.ContainerService/managedClusters/{resourceName}",
   urlParameters: [
     Parameters.subscriptionId,
-    Parameters.resourceGroupName,
+    Parameters.resourceGroupName0,
     Parameters.resourceName
   ],
   queryParameters: [
@@ -671,7 +671,7 @@ const beginCreateOrUpdateOperationSpec: msRest.OperationSpec = {
   path: "subscriptions/{subscriptionId}/resourceGroups/{resourceGroupName}/providers/Microsoft.ContainerService/managedClusters/{resourceName}",
   urlParameters: [
     Parameters.subscriptionId,
-    Parameters.resourceGroupName,
+    Parameters.resourceGroupName0,
     Parameters.resourceName
   ],
   queryParameters: [
@@ -706,7 +706,7 @@ const beginUpdateTagsOperationSpec: msRest.OperationSpec = {
   path: "subscriptions/{subscriptionId}/resourceGroups/{resourceGroupName}/providers/Microsoft.ContainerService/managedClusters/{resourceName}",
   urlParameters: [
     Parameters.subscriptionId,
-    Parameters.resourceGroupName,
+    Parameters.resourceGroupName0,
     Parameters.resourceName
   ],
   queryParameters: [
@@ -738,7 +738,7 @@ const beginDeleteMethodOperationSpec: msRest.OperationSpec = {
   path: "subscriptions/{subscriptionId}/resourceGroups/{resourceGroupName}/providers/Microsoft.ContainerService/managedClusters/{resourceName}",
   urlParameters: [
     Parameters.subscriptionId,
-    Parameters.resourceGroupName,
+    Parameters.resourceGroupName0,
     Parameters.resourceName
   ],
   queryParameters: [
@@ -762,7 +762,7 @@ const beginResetServicePrincipalProfileOperationSpec: msRest.OperationSpec = {
   path: "subscriptions/{subscriptionId}/resourceGroups/{resourceGroupName}/providers/Microsoft.ContainerService/managedClusters/{resourceName}/resetServicePrincipalProfile",
   urlParameters: [
     Parameters.subscriptionId,
-    Parameters.resourceGroupName,
+    Parameters.resourceGroupName0,
     Parameters.resourceName
   ],
   queryParameters: [
@@ -797,7 +797,7 @@ const beginResetAADProfileOperationSpec: msRest.OperationSpec = {
   path: "subscriptions/{subscriptionId}/resourceGroups/{resourceGroupName}/providers/Microsoft.ContainerService/managedClusters/{resourceName}/resetAADProfile",
   urlParameters: [
     Parameters.subscriptionId,
-    Parameters.resourceGroupName,
+    Parameters.resourceGroupName0,
     Parameters.resourceName
   ],
   queryParameters: [
diff --git a/packages/@azure/arm-containerservice/lib/operations/openShiftManagedClusters.ts b/packages/@azure/arm-containerservice/lib/operations/openShiftManagedClusters.ts
index f7427870558e..e7830fc6249d 100644
--- a/packages/@azure/arm-containerservice/lib/operations/openShiftManagedClusters.ts
+++ b/packages/@azure/arm-containerservice/lib/operations/openShiftManagedClusters.ts
@@ -313,7 +313,7 @@ const listByResourceGroupOperationSpec: msRest.OperationSpec = {
   path: "subscriptions/{subscriptionId}/resourceGroups/{resourceGroupName}/providers/Microsoft.ContainerService/openShiftManagedClusters",
   urlParameters: [
     Parameters.subscriptionId,
-    Parameters.resourceGroupName
+    Parameters.resourceGroupName0
   ],
   queryParameters: [
     Parameters.apiVersion0
@@ -337,7 +337,7 @@ const getOperationSpec: msRest.OperationSpec = {
   path: "subscriptions/{subscriptionId}/resourceGroups/{resourceGroupName}/providers/Microsoft.ContainerService/openShiftManagedClusters/{resourceName}",
   urlParameters: [
     Parameters.subscriptionId,
-    Parameters.resourceGroupName,
+    Parameters.resourceGroupName0,
     Parameters.resourceName
   ],
   queryParameters: [
@@ -362,7 +362,7 @@ const beginCreateOrUpdateOperationSpec: msRest.OperationSpec = {
   path: "subscriptions/{subscriptionId}/resourceGroups/{resourceGroupName}/providers/Microsoft.ContainerService/openShiftManagedClusters/{resourceName}",
   urlParameters: [
     Parameters.subscriptionId,
-    Parameters.resourceGroupName,
+    Parameters.resourceGroupName0,
     Parameters.resourceName
   ],
   queryParameters: [
@@ -397,7 +397,7 @@ const beginUpdateTagsOperationSpec: msRest.OperationSpec = {
   path: "subscriptions/{subscriptionId}/resourceGroups/{resourceGroupName}/providers/Microsoft.ContainerService/openShiftManagedClusters/{resourceName}",
   urlParameters: [
     Parameters.subscriptionId,
-    Parameters.resourceGroupName,
+    Parameters.resourceGroupName0,
     Parameters.resourceName
   ],
   queryParameters: [
@@ -429,7 +429,7 @@ const beginDeleteMethodOperationSpec: msRest.OperationSpec = {
   path: "subscriptions/{subscriptionId}/resourceGroups/{resourceGroupName}/providers/Microsoft.ContainerService/openShiftManagedClusters/{resourceName}",
   urlParameters: [
     Parameters.subscriptionId,
-    Parameters.resourceGroupName,
+    Parameters.resourceGroupName0,
     Parameters.resourceName
   ],
   queryParameters: [