Starting this year, the rules regarding attachments in the Peppol network have been updated. At Inexchange, we of course adapt to the new guidelines. This means that when you send an invoice from us to a recipient using another Peppol operator, we now include the PDF invoice image directly in the Peppol message (provided that you send it to us).
What do I need to do as an invoice issuer?
- If a recipient contacts you about duplicate invoice images: Contact our support and let us know which recipient it concerns, and we will help you remove old customizations completely free of charge.
- If a recipient reacts to suddenly receiving a PDF image at all: Refer the recipient to their own operator. Since we strictly follow the new, official format standard, the image is sent automatically. It is up to the recipient’s operator or business system to control how they choose to handle and display attachments on their side.
Here we have gathered the most common questions and answers about how this affects you as an issuer.
1. Why is the PDF invoice image now sent to external Peppol recipients?
Previously, there were restrictions against attaching a visual PDF copy of the invoice in Peppol (SFTI’s technical recommendations aimed to avoid discrepancies between XML data and the PDF).
During 2026, the regulations and standards were updated to meet market demand. Including the invoice image as an integrated attachment when sending to other operators is now fully allowed and recommended. This makes it easier for your recipients who still want to be able to see the traditional invoice image in their business system.
2. My recipient says they are getting duplicate invoice images – why?
Before the new rules came into effect, we set up customizations for outgoing flows at customer request. If a specific recipient absolutely required a PDF, we may have built a solution that sent the PDF image as a separate attachment instead.
Now that the PDF image is automatically included directly in the standard flow to the other operator, these old customizations can conflict and cause the recipient to experience duplicates.
3. What does it cost to fix any duplicate issues?
Nothing. Since we are adapting to the new common market rules, we want the transition to be as smooth as possible for you and your customers.
If you have an old customization in your outgoing flow that is now causing duplicates for the recipient, we will remove this solution completely free of charge.