We will offer a contractor a quote for a project, which they'll approve and provide their purchase order number. Often times, the total amount of the invoices that have generated for purchases by the customer for that particular project will exceed the amount that was quoted/approved. On the lien request, I have been entering the amount that totals all invoices relating to a project even if it does exceed the quote/PO amount. Is this correct or should I be entering only the amount that was approved on the quote/PO?