A.when there is a price difference between purchase and invoice receipt for purchase order item

B.where there is quantity difference between invoice and purchase order item

C.where there is a difference between the invoice price and valuation price of the market

D.Where there is a quantity difference between goods receipt and invoice receipt for purchase order item

A.Contract leakage

B.contract release orders

C.unused contracts

D.Value contract consumption

E.Conditions by contract