PO Order acknowledgment using Idoc

Hi All,

Some question about the PO Order acknowledgement.

Anybody know that, if i use the idoc for order confirmation, is it possible to keep each time or record in the PO item confirmation tab?

Because i tested, when i regenerated the idoc, that PO item confirmation record has been overwrited.

Secord, is it any field of rejection in idoc type ORDERS05 ?

Regards,

Luke