You can change the discount and due date information on a posted invoice that has a remaining amount greater than zero. To adjust posted item information, select Resources and Tools > Adjust the Due Date for a Posted Item from the left navigation pane in Accounts Payable. You can update the PO#/Description, Due Date, Discount Date, and Discount columns on the Detail tab of the AP Adjust Posted Item Due Date window. You can also edit the bill’s notes. You can view all the other information about the transaction, but you cannot edit it.