When your supplier creates an invoice, the information should be on the header of the document. Our system will capture it and automatically make the link.
You should have POs with invoices attached to it because this is the true value of InstaSupply. This link, combined with the Delivery received, will allow you to control your spend.
If for any reason, the invoice received has no PO attached and you know what the order number is for that document, you can upload yourself. On the invoice page, type the Purchase Order number on the box below and click on the blue button "Add PO Number".
If you don't know the Purchase Order number, contact the supplier.