PEPPOL-EN16931-R020 — Missing Seller electronic address

What it means

The Seller electronic address (EndpointID) must be provided — required on the Peppol network. Just like the buyer, the seller also needs a known electronic address so the document can be correctly routed on the Peppol network.

How to fix it

Check that the seller's Party section has an EndpointID element with a schemeID attribute from the official Peppol EAS list (https://docs.peppol.eu/edelivery/codelists/). The accounting software or Peppol service provider usually knows the exact scheme and value.

Example

Wrong: the seller section has no EndpointID element. Correct: <cbc:EndpointID schemeID="...">...</cbc:EndpointID> with a scheme and value from the Peppol EAS list.