How to proceed with PO/Receipt matching for a voucher uploaded by interface

PeopleSoft FS 9.2

We want to implement a solution to automatically record AP invoices in PeopleSoft for PO invoices. A third party OCR tool will generate an xml containing information from pdf invoice such as supplier ID, invoice#, date etc and PO Id. The PO line and receipt line are not available information on the invoice.

Is there any existing solution to link the invoice line with the PO line and the receipt or this should be built?

If someone has already implemented a similar solution, an insight on how this was done would be the most welcomed.