Peppol BIS Billing 3.0 · rule

UBL-CR-326

Layer en16931·Checked against Peppol BIS Billing 3.0 2026.5

What does UBL-CR-326 mean? A UBL invoice should not include the TaxRepresentativeParty PartyTaxScheme RegistrationName

Why did my invoice fail UBL-CR-326?

The invoice should not contain the RegistrationName element inside the tax representative's PartyTaxScheme (cac:TaxRepresentativeParty/cac:PartyTaxScheme/cbc:RegistrationName). In the EN 16931 mapping, the tax representative's name (BT-62) is carried in cac:PartyName/cbc:Name, and PartyTaxScheme is used only for the VAT identifier (BT-63); a registration name there is outside the core model.

Official rule text

A UBL invoice should not include the TaxRepresentativeParty PartyTaxScheme RegistrationName

Common causes

The representative's name is duplicated into PartyTaxScheme/RegistrationName in addition to PartyName
A mapping built for the seller party (where different conventions were assumed) is reused for the tax representative

How do I fix it?

<cac:TaxRepresentativeParty>
  <cac:PartyName><cbc:Name>Tax Rep GmbH</cbc:Name></cac:PartyName>
  <cac:PartyTaxScheme>
    <cbc:CompanyID>DE123456789</cbc:CompanyID>
    <cac:TaxScheme><cbc:ID>VAT</cbc:ID></cac:TaxScheme>
  </cac:PartyTaxScheme>
</cac:TaxRepresentativeParty>
<!-- name goes in cac:PartyName, not cbc:RegistrationName -->

Check your invoice against this rule

Paste it into the live demo, or call POST /v1/validate. See the quickstart.