Invoice against Purchase agreement

Hi all,

Could you explain how the AP clerk will know whether there is a purchase agreement or purchase order in place for the vendor? All invoices will be entered using either Invoice Journal or Invoice entry method. It appears the only way to invoice against a purchase agreement is to go into the purchase agreements section within AP.
Thanks

The purchase agreement is overriding, you have release purchase orders, so when you receive in you receive against the purchase order, not the agreement and therefore whilst the invoice is under the umbrella of an agreement the commitment is against the purchase order, and therefore your supplier should be supplying against the call off order. If you are only given the agreement reference you would need to go to the agreement and look at the related released purchase orders and make a decision which one the invoice relates.