It would be helpful to have a purchase order and subcontract close process to automatically create a deductive change order and change the status to Closed. You would run it from the Actions dropdown in either area. It would then give you a list of all eligible commitments with an open amount on them (it would take into account pending items and alert the user that there are pending items associated with them, and then mark those items as not approved automatically). You would select the ones you want to close, and the system would create deductive changes for each. They would be set to a pending status, and the user would then route them for approval, send them off to the Vendor, etc.