How can we restrict IPV line creation in AP invoice for category based Purchase Orders?

Hi,

When we match PO with supplier invoice, IPV line is created. Because invoice amount and PO matched amount is different.

But this purchase order line is category based so we don't have item number. In 11i version IPV line isn't created for category based purchase orders, IPV

line is created just item related Purchase Order Lines. But in R12 version IPV line is created both category based PO line and item based PO line.

How can we restrict IPV line creation for category based PO lines?

Best Regards,

Burak