Invoice without referencing Purchase Order

Question

Hi
When an invoice comes with out referencing purchase order then accounts payable does not have a way to look up the supplier and see if there is any PO issue against it .
This causes as some invoices are being paid manually instead of from the issued PO which is more time consuming for A/P, the requestor and purchasing.
This also means the requestor is being asked to reapprove and recode which is frustrating for them .
If a PO is used the requestor should only need to verify the invoice.
Another issue that crops up due to the above is that the PO never closes .
Can any body provide a solution for the above that any invoice comes with out a referenced PO then what is the best way to match invoice with PO and close the PO .Is there any automation in the set up available that would seek the PO for invoice that has come with out any reference of PO??
Thanks
Jogendra
Another issue is the PO is never closed.

Answer 1

Hi
Thanks for your reply .
But here we donot want to hold the invoice instead make the payment immediately on knowing the status of the invoice .
let me explain ,here there is only one Purchasing person,so the invoice does not go to him for verification instead goes directly for payables for payment .So,based on the PO number mentioned in the invoice payable makes the payment by matching the invoice with the relevant PO but in some cases there is no mention of PO in the invoice .so in that case payables are not clear whether the invoice has come with /without any reference to PO.
So,payable needs a automated solution where in he could see the POs that are open against the supplier while making payment and match it with the invoice which came without any reference of PO.He will not go to Purchasing person for confirmation.
Also,we dont want to give purchasing responsibility to the payable person.So something that he should view .Please advice.
Thanks
Jogendra