Mass Maintenance for PO Header/PO item

PO Header Table -
EKKO

PO Item Table -
EKPO

Tcode -
MEMASSPO

it cannot be maintained in ME22 or ME22N, that s correct.

it unfortunatly can be done with MEMASSPO mass transaction that uses BAPI technologie.

It should not be maintained by a user, not even with a function module.

It will automatically update when Archiving is in process.

Just dont care about this field , dont touch it.

http://forums.sdn.sap.com/thread.jspa?threadID=1496514