The purchasing process encompasses all of the procedures that you will follow from first requesting goods to receiving items delivered to you by a supplier. Requisitions are documents used to request purchases.
Some organizations call requisitions purchase authorizations.
Once you have created a requisition, you must submit the requisition that becomes subject to the approval process. The supplier acknowledges receipt of the purchase order and sends a message, called a PO Acknowledgment, to your organization. Upon receipt of the items you record the receipt of the goods in the Purchasing Application program. The supplier sends your organization an invoice via the Internet. Payment is either made by credit card when the PO is sent out or upon receipt of the item.