Explained she would pay the invoice against the PO just entered. Keyed in entry date, invoice number, purchase number, and amount. The system brought up the PO and showed the match of money to the invoice. If the entry person sees that this is a match, he hits OK and the payment document is created. Did not turn on that option globally.
Departments can choose to receive.
However, if you choose to receive, you must receive. Or else the invoice will be blocked from payment. Lisa showed the purchase requisition, PO, and the posted invoice online. By double clicking on a line you are able to drill down to the original documents. I notice the names on the screens are SAP specific.