Raising a restrospective PO

Hi,

I work for Northumberland County Council in the UK ; we receive a large volume of paper invoices for items such as software licenses. The current practice is to create an invoice. This is quite a time consuming process.

 

My goal is to raise a retrospective Purchase Order (PO) and then have the invoice matched to the PO . The PO must not be communicated to the Supplier, as we already have the item of goods. The danger is that the user forgets to uncheck the communication method when sending the PO for approval.

 

Is there any PO document, other than the standard PO that could be used to meet this objective?