We're having trouble closing a purchase order that has two lines and two different dates. The first line has a delivery date of 06/30/15 line #2 has a delivery date of 06/13/15. Our purchasing department usually closes our PO's and any remaining funds goes back to the department's budget. They are having trouble closing our PO and said they need to try and close it after hours when our system is shut down. Do you think the dates are the problem? I think line #2 should be closed first since it has an earlier date? Please help?