PO Invoice Margin Tolerance
You can set up controls so that users cannot submit a vendor invoice for posting if its invoice allocation lines exceed the remaining amount in the relevant purchase order.
This prevents users from submitting invoices that exceed the value of approved purchase orders.
You can also specify that vendor invoice allocation lines can exceed the remaining amount in the relevant purchase order as long as the amounts in the lines are within the given margin (whether fixed amount or percentage, or both).
Parent Topic: Approval Hierarchies