登录之后可查看解析

In addition, a purchase requisition and a purchase order are needed.
In addition, a purchase requisition is needed.
A purchase requisition, authorized by the user department, gives purchasing personnel authority to place an order. The purchase order, along with the purchase requisition and the receiving report, should be checked before the vendor's invoice is paid. The purchase order is necessary so that the accounts payable department can see that the items were ordered; and the receiving report is needed so they can be sure the items were received before they are paid for.
A receiving report is also required, in order to be certain that the items ordered were received; and an inventory report of goods needed is not a required document to control purchasing and accounts payable, although it may be useful as backup to a purchase requisition.