Also known as: PO, PO number, client PO.
In practice
The PO arrives by email, is quoted on the report, then re-typed on the invoice weeks later by someone else. Every re-typing is a chance to get it wrong.
PO numbers in AMPS
Enter the PO once on the job in AMPS and it is filled automatically into the Word report; when the job is marked ready for invoicing the invoice is created in Xero with the job’s references. Email actions let you create jobs or add costs by emailing AMPS.