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Purchase Order (PO) reference

If your company requires a Purchase order reference on your invoices please follow one of the below procedures depending on which of our service is concerned.

  • Non-Traffic Related invoices:
    • PO reference can be updated in the non-traffic related invoices and has no effect on invoices issued in the past.
    • Access needed on "Edit billing and shipping addresses". If you do not have this access, please request it through Manage Your Profile on
    • How does it work? Watch this video here.
    • Change your PO reference
  • Traffic related invoice:
  • Business and Lite Certificate Fees:
    • Please fill this form to request a purchase order reference on your business and lite certificates related invoices.
  • Additional information:
    • Please note that invoices issued in the past will not be affected.
    • Any invoice rework is subject to admin fee of EUR 1,000.
  • Deadlines:
    • Before next Billing cycle occurring at the end of each month.
    • Between 1st and 29th of January: the change will be effective for the annual invoicing occurring end of January onwards.