Enrique, this note is related to SAP Discrete Industries and Mill Products, is it your case? I think that note won't help you.
I have found two notes that match with your issue, but seems to work only with Purchase order BAPI's:
578063 - Purchase order BAPI's in A&D - 1
595623 - Purchase order BAPI's in A&D - 2
Regards,
Felipe