Creating a Receiving
You create a Receiving just as you do a Purchase Order. Just remember that bypassing the stage of a Purchase Order you have lost the trigger that is pulled to send I-Mail's on your backorder dates. If you do not care about that then you may start your order as a Receiving.
How to:
see Graphical Menu Purchasing/Payables
Click on Purchasing/Payables then click on 'Receiving'
Click on 'Create New Receiving?' the see Create Purchase Order for the rest of the details