What are the top issues with PO invoices?
1. Invoicing for services performed after Purchase Order (PO) expiration date. 2. Invoice amount is in excess of authorized funds on Purchase Order. 3. No record of receipt. Please send Proof of Delivery to us at ap.invoices@jpl.nasa.gov or through regular mail. 4. Good(s) or service(s) is not authorized on PO. 5. Quantity billed is at variance with quantity received. 6. Rebill by line item and at unit prices on PO. 7. Services not received. 8. Duplicate invoice – JPL has already paid amount due.