Do not allow overbilling (revised value or lines) - If this radio button is selected you will not be allowed to change the status of the record to "Approved" if the amount invoiced exceeds the total revised value of the contract or if it exceeds the revised value any line
or
Allow overbilling - If this radio button is selected you will not be allowed to change the status of the record to "Approved" if the amount invoiced exceeds the total revised value of the contract by a percentage greater than "% of revised value" and/or if it exceeds the revised value of any line by a percentage greater than "% of line item".