SAP Message VL722 - Plant not unique

Diagnosis
The supplying plant must be the same in all delivery items because itis valid for the entire document.
Item &V1& is currently assigned to plant &V2&, but item &V3& has plantV4.

System Response
No output (printed or faxed) occurs for this document. Outputprocessing status shows an error.

Procedure
Redistribute the delivery or shipment so that all delivery items areassigned to the same plant.