A purchase order number or PO number is a unique number assigned to an invoice. PO numbers can be any combination of letters, numbers or special characters. You can assign a purchase order number to each transaction that generates an invoice.
Set a PO number for an advertiser at the sub-manager account level. Share invoices by PO number with multiple sub-managers.
On an invoice, you’ll find the purchase order number after all line items. If a PO number isn't set for an advertiser, that section will be blank.
The new Search Ads 360 will sync purchase order numbers from the previous experience.