BR-06

The invoice must contain the seller name (BT-27) — the full registered name the company trades under.

Severity: Error
Applies to: CII, UBL
Rule set: v2026-01-31

Official rule text

An Invoice shall contain the Seller name (BT-27).

Why does BR-06 happen?

The sender lives in the letterhead rather than in the invoice data: it is the same on every invoice and so is maintained in the layout instead of the record. It falls out when the XML is produced.

How do you fix BR-06?

Put the registered name in BT-27: cac:AccountingSupplierParty/cac:Party/cac:PartyLegalEntity/cbc:RegistrationName in UBL, ram:SellerTradeParty/ram:Name in CII. A differing trading name goes in BT-28 as well.

In the XML

A UBL fragment. The CII path is named above — same change, different element names.

Fails

<cac:AccountingSupplierParty>
  <cac:Party>
    <cac:PostalAddress>
      <cbc:CityName>Berlin</cbc:CityName>
    </cac:PostalAddress>
  </cac:Party>
</cac:AccountingSupplierParty>

Fixed

<cac:AccountingSupplierParty>
  <cac:Party>
    <cac:PostalAddress>
      <cbc:CityName>Berlin</cbc:CityName>
    </cac:PostalAddress>
    <cac:PartyLegalEntity>
      <cbc:RegistrationName>Muster GmbH</cbc:RegistrationName>
    </cac:PartyLegalEntity>
  </cac:Party>
</cac:AccountingSupplierParty>

NormAPI provides technical validation, not tax or legal advice.