Updating of Blanket PO after import-11.5.10.2

Hello,

We have a business need to update Approved Blanket POs once they are imported through Purchasing open interface.

Is there any standard oracle supplied API, that allowed PO information to be updated on PO Headers, line , line locations and distributions?

This is on Oracle EBS 11.5.10.2 with Database 10g on HPUX.

Thanks,

D