Added note

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cc: @curtand

Author: MarileeTurscak-MSFT

articles/active-directory/users-groups-roles/users-bulk-add.md

@@ -40,7 +40,7 @@ In order to bulk create users in the administration portal, you must be signed i
 1. When your file passes validation, select **Submit** to start the Azure bulk operation that imports the new users.
 1. When the import operation completes, you'll see a notification of the bulk operation job status.
 
-If there are errors, you can download and view the results file on the **Bulk operation results** page. The file contains the reason for each error.
+If there are errors, you can download and view the results file on the **Bulk operation results** page. The file contains the reason for each error. The file submission must match the provided template and include the exact column names.
 
 ## Check status