What is a PO Number?
A Purchase Order (PO) number is an internal reference number that your company uses for accounting or invoicing purposes. Adding your PO number ensures that your finance department can easily match incoming invoices with purchase orders.
Entering the PO Number
- Open the Billing page in the dashboard.
- Click Edit Billing Address.
- Enter your company's purchase order number in the PO Number (optional) field.
- Click Save.
Usage
- The PO number will be printed on all future PDF invoices issued by seven.
- It will also be included in the XML structure of ZUGFeRD invoices for automated invoice processing.
- Exception for XRechnung: if a Leitweg-ID is stored, the XML carries the Leitweg-ID as buyer reference instead. The PO number still appears on the PDF invoice.
- This allows both manual and automated workflows (e.g., ERP or accounting systems) to identify and reconcile the invoice faster.
Important Notes
- Adding a PO number is optional. If your company does not require PO references, you can leave the field blank.
- Updates to the PO number only affect future invoices. Already issued invoices remain unchanged.
- You can change or remove the PO number anytime via Billing > Edit Billing Address.
Example
Your company requires all supplier invoices to reference an internal order number. By adding your PO number to your seven account, the number will automatically appear on both the PDF invoice and in the ZUGFeRD XML file, making life easier for your accounting team.