After the items to be ordered, the supplier and the terms of supply are determined, a Purchase Order is issued to the supplier for supply of specified Items.
The Purchase Order contains the specific particulars of each item with complete specifications, attributes if any (like Brand, Color, Size etc) Quantity, Purchase Rate, Additional Charges (like Taxes etc) Discount if any, delivery & payment terms, etc.
Purchase Order: The purchase activities start from issue of Purchase Order on the Supplier for supply of Items at rates and terms as specified in the Purchase Order. On supply of Items, the supplier submits an Invoice for the Items supplied, which constitutes the Purchase Invoice.