BR-01

EN 16931 FATAL

Official rule text

An Invoice shall have a Specification identifier (BT-24).

What this error means

Every invoice must carry a Specification identifier (BT-24, cbc:CustomizationID) - the string that declares which rule set the invoice claims to follow. Without it, validators cannot even decide which rules apply, so this is usually the very first error you meet.

How to fix it

Add cbc:CustomizationID as the first element of the invoice body.
For Peppol use urn:cen.eu:en16931:2017#compliant#urn:fdc:peppol.eu:2017:poacc:billing:3.0.
For plain EN 16931 use urn:cen.eu:en16931:2017; for XRechnung use the German CIUS identifier.

Example

✗ Rejected

<Invoice>
  <!-- no CustomizationID -->
  <cbc:ID>INV-001</cbc:ID>

✓ Accepted

<Invoice>
  <cbc:CustomizationID>urn:cen.eu:en16931:2017#compliant#urn:fdc:peppol.eu:2017:poacc:billing:3.0</cbc:CustomizationID>
  <cbc:ID>INV-001</cbc:ID>

Related rules

Fix it faster

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