A purchase order is commercial document and first official order issued by buyer to the supplier,indicating type,quantity,and agreed prices for product or services the supplier will provide to the buyer. 1)Standard purchase order:-this is used for one time purchases for good and services. here you know the item,price,payment item or delivery schedule. 2)Planned purchase order:-created when you have long term agreement with supplier.you must specify the the details of good and services ,payment term and the tentative delivery schedules. 3)Blanket purchase agreement:-this is created when the details of item and services,payment are know but not specify the delivery schedule. 4)Contact purchase agreement:-this is created when the term and conditions of a purchase are known but specific good and services are not. steps of standard purchase order creation:- 1)we go to navigator(vision operation USA) 2)go to purchase order 3)select operating unit(vision operation). 4)select supp