We created SO for memo item and after sales order manual allocation we do picklist/pre-shipper automatic but no PS number displayed.
But upon checking the sales order detail browse the SO already shipped.
How are we going to generated a DR number in pre-shipper/shipper confirm.
I have not been able to replicate this. Can you check the tr_hist to
see which program did the shipment (ISS-SO) and who did it. That
might give you a clue to what happened