In Apps10 we are creating Supplier Invoices leveraging a custom C_Inbound_Invoice_Int package that is called via a routing rule in IFS Connect that parses an incoming xml file from an external AI document reader/processor. It works very well for non-PO invoices. But we are now trying to replicate that process for PO Invoices. We are stuck on the matching process. What API do we have to call to match the receipts? We basically need to automate this process:

Any suggestions?