Australia (Peppol): Order Reference

You can specify an order reference at the Document level.

In Australian invoices, if the Buyer Reference is not provided in /Invoice/BuyerReference, the Order Number is mandatory and must be transmitted in the element /ID.

Example

<Invoice>
    <!-- code omitted for clarity -->
    <cac:OrderReference>
        <ID>PO-11223344</ID>
    </cac:OrderReference>    
    <!-- code omitted for clarity -->
</Invoice>