Norway invoice submission uses the four-corner PEPPOL model to route documents from your system through Sovos to the buyer's Access Point.

1. You, as the supplier, create the invoice document and submit it to Sovos through the API.

2. Sovos validates the document and map it to the required format. Then, routes it through the PEPPOL network to the buyer's Access Point.

3. The buyer receives the document through their Access Point and sends a response back, processed through Sovos and forwarded to the supplier.

4. You can get notifications about the delivery status.

Submission to Sovos doesn't confirm delivery. The HTTP 202 response you receive when you submit means Sovos accepted the document for processing, not that the buyer received it. Delivery is confirmed through a separate notification after Sovos routes the invoice to the buyer's Access Point.

If the buyer's EndpointID isn't registered as a Peppol participant, dynamic discovery fails during endpoint resolution before the invoice reaches the network. For Norwegian buyers, this appears as error M-NO-3004003 ("The buyer is not registered in ELMA/Peppol"). For more details, see Troubleshoot common issues.