BR-11: Buyer country code (BT-55) is missing

StandardEN 16931-1 (European e-invoicing semantic model)SeverityError: the invoice is rejectedSyntaxUBL, CIIBusiness terms

BT-55 Buyer country code

Applies toEvery EN 16931 invoice: XRechnung, ZUGFeRD 2.x / Factur-X (profiles EN 16931, EXTENDED, XRECHNUNG), Peppol BIS Billing 3.0, and national CIUS such as the Dutch NLCIUS or the Italian/Spanish profiles.

Official rule text

[BR-11] The Buyer postal address shall contain a Buyer country code (BT-55).

Why this error occurs

Inside the buyer postal address the rule requires cac:Country/cbc:IdentificationCode (UBL) or ram:PostalTradeAddress/ram:CountryID (CII). The buyer country decides whether the supply is domestic, intra-community or export and therefore which VAT treatment applies. It is usually missing because the ERP stores the country as text or leaves it empty for domestic customers.

How to fix it

In UBL add cac:Country/cbc:IdentificationCode as the last child of cac:AccountingCustomerParty/cac:Party/cac:PostalAddress. In CII add ram:CountryID as the last child of ram:BuyerTradeParty/ram:PostalTradeAddress. Use an ISO 3166-1 alpha-2 code in upper case such as DE, AT, CH, FR; fill it for domestic customers as well, there is no implicit default.

Example (valid)

<cac:Country>
  <cbc:IdentificationCode>AT</cbc:IdentificationCode>
</cac:Country>

What the validator checks

Checked element (context):

UBL

cac:AccountingCustomerParty/cac:Party/cac:PostalAddress

Test (XPath):

normalize-space(cac:Country/cbc:IdentificationCode) != ''

CII

/rsm:CrossIndustryInvoice

Test (XPath):

normalize-space(rsm:SupplyChainTradeTransaction/ram:ApplicableHeaderTradeAgreement/ram:BuyerTradeParty/ram:PostalTradeAddress/ram:CountryID) != ''

Check your invoice

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Check your invoice →

Same check via API:

curl -F file=@invoice.xml https://einvoicechecker.com/v1/validate

Related rules

BR-01 Specification identifier (BT-24) is missing
BR-02 Invoice number (BT-1) is missing
BR-03 Invoice issue date (BT-2) is missing
BR-04 Invoice type code (BT-3) is missing
BR-05 Invoice currency code (BT-5) is missing
BR-06 Seller name (BT-27) is missing
BR-07 Buyer name (BT-44) is missing
BR-08 Seller postal address is missing

Frequently asked questions

What does BR-11 mean?

BR-11 is a en 16931 core rule: The Buyer postal address shall contain a Buyer country code (BT-55).

Will my invoice be rejected because of BR-11?

Yes. BR-11 is flagged "fatal"; validators (KoSIT, Peppol access points, the German ZRE/OZG-RE portals) reject the invoice until it is fixed.

Which formats does BR-11 apply to?

Every EN 16931 invoice: XRechnung, ZUGFeRD 2.x / Factur-X (profiles EN 16931, EXTENDED, XRECHNUNG), Peppol BIS Billing 3.0, and national CIUS such as the Dutch NLCIUS or the Italian/Spanish profiles. Syntax: UBL and CII.

Source: EN 16931-1:2017 schematron (CEN TC434, via Peppol BIS 3.0.20). Catalogue generated from the official schematron on 2026-10-14.