By default, when user disputes an item, the values on the original purchase order (not the values on the invoice) are marked for payment. However, the user can adjust the values before the IR document is submitted.

It is the supplier's responsibility to submit a corrected invoice for payment of the disputed items.

In the default configuration, Ariba Buyer allows you to short-pay an invoice. An Invoice Reconciliation (IR) document can be submitted and approved with some items accepted and other items disputed. By disputing an item, you are saying you will not pay the invoiced amount for that particular item. Therefore, a short-paid invoice is an invoice on which only certain items and amounts are paid for.

For example, if the quantity invoiced is greater than the quantity on the purchase order, when the IR document item is disputed, the quantity value will default to the number on the purchase order. The user can also change the value to another number before the IR document is submitted.