PEPPOL-EN16931-R007

Explanation

The business process (ProfileID) must follow the format 'urn:fdc:peppol.eu:2017:poacc:billing:NN:1.0', where NN is the profile number (e.g., 01 for standard billing).

How to fix

Correct the ProfileID URN format. (Typically a software-side issue, not user input — raise this with your invoicing software vendor; if you're receiving the invoice, ask the sender to address it with theirs.)