diff --git a/specification/datamigration/resource-manager/Microsoft.DataMigration/preview/2018-07-15-preview/definitions/Services.json b/specification/datamigration/resource-manager/Microsoft.DataMigration/preview/2018-07-15-preview/definitions/Services.json
index fd4384cba26d..071c48f8e78d 100644
--- a/specification/datamigration/resource-manager/Microsoft.DataMigration/preview/2018-07-15-preview/definitions/Services.json
+++ b/specification/datamigration/resource-manager/Microsoft.DataMigration/preview/2018-07-15-preview/definitions/Services.json
@@ -157,6 +157,10 @@
         "virtualSubnetId": {
           "type": "string",
           "description": "The ID of the Microsoft.Network/virtualNetworks/subnets resource to which the service should be joined"
+        },
+        "virtualNicId": {
+          "type": "string",
+          "description": "The ID of the Microsoft.Network/networkInterfaces resource which the service have"
         }
       },
       "required": [