diff --git a/data-explorer/database-script.md b/data-explorer/database-script.md
index d7049c1386..ee475727d1 100644
--- a/data-explorer/database-script.md
+++ b/data-explorer/database-script.md
@@ -271,6 +271,7 @@ Use the following settings:
 * Scripts are only supported in Azure Data Explorer.
 * Two scripts can't be added, modified, or removed in parallel on the same cluster. If this occurs, the following error: `Code="ServiceIsInMaintenance"` is raised.  You can work around the issue by placing a dependency between the two scripts so that they're created or updated sequentially.
 * To create functions with [cross-cluster queries](/kusto/query/cross-cluster-or-database-queries?view=azure-data-explorer&preserve-view=true) using scripts, you must set the `skipvalidation` property to `true` in the [.create function command](/kusto/management/create-function?view=azure-data-explorer&preserve-view=true).
+* Cross cluster queries and callouts making use of impersonation aren't supported.
 
 ## Troubleshooting