warningpeppol-bis-3

IN-CUSTOMIZATION-FORMAT:CustomizationID format recommendation

CustomizationID should follow Peppol BIS Billing 3.0 format

Why This Error Matters

CustomizationID determines which validation rules apply to the invoice.

How to Fix It

1

Set CustomizationID

urn:cen.eu:en16931:2017#compliant#urn:fdc:peppol.eu:2017:poacc:billing:3.0

2

For credit notes

Same identifier applies

3

Country extensions

May need additional extension for country-specific rules

Code Example

<cbc:CustomizationID>urn:cen.eu:en16931:2017#compliant#urn:fdc:peppol.eu:2017:poacc:billing:3.0</cbc:CustomizationID>

Technical Details

XPath: /Invoice/cbc:CustomizationID

Common Causes

  • Wrong specification ID
  • Using EN16931 only
  • Outdated Peppol version

Commonly Seen In

All Peppol invoicing software

Frequently Asked Questions

The CustomizationID must match the Peppol BIS 3.0 specification identifier.
Use the correct Peppol BIS 3.0 CustomizationID. Invoice Navigator can help identify and fix this issue.
Yes, PEPPOL-EN16931-R002 is a critical error that must be fixed.

Related Errors

BR-DE-04

Invalid XRechnung CustomizationID

PEPPOL-EN16931-R001

Business process identifier required

Last updated: 15 January 2026

Share this guide: