When importing a suppliers invoice by Data Management Framework a new pending supplier invoice is created in system.

It does not matter if a related purchase order created in system is already matched to the pending invocie or not. Each time it´s possible to change the payment term information on the invoice header before releasing hte invoice to posting workflow.

Do we create a purchase order in system and then create an accordant pending invoice directly out of purchase order by related function ("Generate invoice") THEN it´s not possible to change the payment term on invoice header.

-> if the supplier would sent the original invoice voucher (e.g. paper or PDF document) and on the invoice document another payment term is deposited than on purchase order in system THEN it´s not possible just to change it easily on the already created invoice. You would have to delete the invoice again, to adjust the purchase order, to release it again through the approval workflow and then to create a new pending invoice for it.

The idea is just to release the data field on pending invoice header about payment term information for modification regardless of the creation origin (imported or manually created).