PERNR in MIRO - bapi_incominginvoice_create

Hi,

I need to create an incoming invoice and specify PERNR through bapi_incominginvoice_create . The BDC option against MIRO is no go because I will have more than 8 POs and MIRO doesn't allow me to multi-assign more than that. Besides SAP recommends using bapi.

I've specified all the fields in the header tab, the item tab, GL table is the one that carries PERSON_NO. After, the doc is created the pernr is not there!

I tried to look for an exit/BADI to update the field but could not find one where I can pass the field for update before SAVE.

BTW: Extensionin doesn;t work either as it doesn't have PERNR in it.

Please help!!

Thanks,

Roman