Update New-CsTeamsAppPermissionPolicy.md

Author: srimantabagchi

teams/teams-ps/teams/New-CsTeamsAppPermissionPolicy.md

@@ -18,6 +18,8 @@ author: ashishguptaiitb
 
 As an admin, you can use app permission policies to allow or block apps for your users. Learn more about the app permission policies at <https://learn.microsoft.com/microsoftteams/teams-app-permission-policies> and about app centric management at <https://learn.microsoft.com/microsoftteams/app-centric-management>.
 
+**This is only applicable for tenants who have not been migrated to ACM or UAM**
+
 ## SYNTAX
 
 ```