Hi
We are in SAP 4.7. Once the Invoive verification document is posted for all the items for a PO with MIGO system is allowing to post one more document for the same PO. We have checked check duplicate invoice in teh vendor master which should prevent posting duplicate Invoice during MIRO. Is there any SAP notes to be implimented in our system to prevent duplicate invoice. or please suggest the User exit where we can code to prevent duplicate invoice during MIRO.
Regards
Jai