I go to the Final Posting Proposals screen.  You can search by purchase order number there.

check this window → Invoiced Purchase Orders

It looks like you have to know the voucher date? If I don’t know what invoice number I’m looking for, how do I know the voucher date?

If you use Final Posting Proposals you can search by supplier number or purchase order number and many other criteria.  What exactly are you looking for and what information do you have that could be used in a search?

Thank you!!!!

Invoiced Purchase Orders is the bomb!!!

Thank you, ronhu!

Please note that Invoiced Purchase Orders window shows the invoices matched to receipts, if you are using charges and/or stage payments, you have dedicated windows showing invoices matched to these objects.

In subcontract case, you can finds invoices matched to each valuation in Valuation window itself.