Confirmation control key update in PO
I am using POs with confirmation control key 0004 (inbound delivery). When I create an inbound delivery for a PO the correct confirmation record with key LA is written to the PO. When I then change the inbound delivery and add a batch split for the material and save the inbound again, the confirmation control record changes to AB records. for the Why is this happening and how can I prevent this so that the LA record in the conf. control tab of the PO stays unchanged?
thanks a lot!