SAP Message V50R060 - Item &1 from unchecked delivery &2 could not be deleted

Diagnosis
When generating an unchecked delivery for the preceding document &V3&,errors occurred when deleting item &V1& of the unchecked delivery &V2&.

System Response
Processing is canceled with an error message.

Procedure
Attempt to repeat the transaction. If the error occurs again, contactyour system administrator.