1366176 Add relevant ID application to documentation for provisioning users of NMP

Author: rcdun

articles/communications-gateway/provision-user-roles.md

@@ -61,7 +61,7 @@ You need to use the Azure portal to configure user roles.
     - To view, add, make changes to, or remove configuration: **ProvisioningAPI.AdminUser**.
 
     > [!IMPORTANT]
-    > Ensure you configure these roles on the AzureCommunicationsGateway enterprise application (not the Project Synergy enterprise application for Operator Connect and Teams Phone Mobile).
+    > Ensure you configure these roles on the AzureCommunicationsGateway enterprise application (not the Project Synergy enterprise application for Operator Connect and Teams Phone Mobile). The ID application for AzureCommunicationsGateway is always `8502a0ec-c76d-412f-836c-398018e2312b`.
 
 ## Next steps