Diagnosis
You tried to determine the purchase order for an item, a sub-item, or apackaging material item that you have already saved.

System Response
The system only simulates the determination of the purchase order. Thismeans that you cannot transfer the purchase order item that the systemdetermines to the delivery item.

Procedure
Use the copy function to copy the delivery item when you want to addthe purchase order reference to incomplete delivery items. You can thendetermine the purchase order for the new item. The determination may beautomatic, depending on the settings in Customizing.