BR-05EN 16931fatalbusiness

Missing document currency code

Fix: Invoice Navigator automatically fixes this issue by correcting the `cbc:DocumentCurrencyCode` element in your Invoice. Upload your invoice to fix this automatically.

An Invoice shall have an Invoice currency code (BT-5). This specifies the currency used for all monetary amounts in the invoice using ISO 4217 three-letter codes.

Where is this in my invoice?

Shown on a sample invoice. The marked row is the field this rule checks; on your own invoice it sits in the same place.

Sample invoice · not your document

Invoice

SAMPLE-INV-001 · issued 4 Jan 2026 · due 4 Feb 2026 · EUR

Seller

Seller nameSample Supplier B.V.

Seller streetHerengracht 100

Seller postcode1015 BS

Seller cityAmsterdam

Seller countryNL

Seller VAT numberNL123456789B01

Seller registration number12345678

Seller electronic addressNL123456789B01

Buyer

Buyer nameSample Buyer NV

Buyer streetRue de la Loi 42

Buyer postcode1000

Buyer cityBrussels

Buyer countryBE

Buyer VAT numberBE0123456789

Buyer electronic addressBE0123456789

Invoice details

Invoice numberSAMPLE-INV-001

Issue date4 Jan 2026

Due date4 Feb 2026

Invoice type380

CurrencyEUR BR-05

Buyer referencePO-12345

Payment

Payment method30

Payment IBANNL91ABNA0417164300

Line items

No.	Item	Quantity	Unit price	VAT rate (%)	Line amount
1	Consulting Services	1	€100.00	21%	€100.00

Totals

Sum of line amounts€100.00

Total without VAT€100.00

Total VAT€21.00

Total with VAT€121.00

Amount due€121.00

VAT breakdown

VAT category	VAT rate (%)	Taxable amount	VAT amount
S	21%	€100.00	€21.00

How to Fix It

Identify currency

Determine the currency from amount attributes (currencyID) or business context

Add DocumentCurrencyCode

Insert <cbc:DocumentCurrencyCode>EUR</cbc:DocumentCurrencyCode> after InvoiceTypeCode

Verify consistency

All monetary amounts should use the same currency code in their currencyID attribute

See this rule against your own invoice: every finding is pinned to the row it concerns.

Check your invoice Run this check in CI

Severity

Fatal

Rule set

EN 16931

Country

All EU

Fix type

Auto-fix

Engine Classification

Auto-fix: Derive currency from amount fields if they contain currency symbols or codes. If all amounts are in the same currency, extract and use that code. Falls back to EUR for European invoices if cannot derive.

What is BR-05?

BR-05 is a fatal validation rule defined in the EN 16931 specification. It validates the DocumentCurrencyCode element in the UBL invoice XML.

When this rule fires, the invoice is rejected by Peppol access points and never reaches the buyer.

Target path: /Invoice/cbc:DocumentCurrencyCode

Why This Error Matters

Invoice rejected. Receiver cannot process payment without knowing the currency.

BR-05 is a hard failure — the invoice must be corrected and re-sent before it can reach the recipient.

Invoice Navigator can automatically correct this error in your pipeline. The fix is applied with full audit evidence, so your compliance trail remains intact.

Validator Behavior

·Causes invoice rejection
·Error returned: BR-05
·Specification: EN 16931

Before / After

Failing XML

<cbc:DocumentCurrencyCode></cbc:DocumentCurrencyCode>

Corrected XML

<cbc:DocumentCurrencyCode>EUR</cbc:DocumentCurrencyCode>

Technical Reference

XPath/Invoice/cbc:DocumentCurrencyCode

SpecEN 16931

Operationderive_or_default

StrategyAuto-fix: Derive currency from amount fields if they contain currency symbols or codes. If all amounts are in the same currency, extract and use that code. Falls back to EUR for European invoices if cannot derive.

Code Example

<cac:PartyLegalEntity>\n  <cbc:RegistrationName>Acme Corporation B.V.</cbc:RegistrationName>\n</cac:PartyLegalEntity>

Common Causes

·Currency code field not mapped in export template
·Multi-currency system didn't specify document currency
·Currency assumed from locale but not explicitly set
·Template missing DocumentCurrencyCode field
·Currency stored as symbol (€) not ISO code (EUR)

Seeing this in production? The API handles BR-05 automatically. See the fix response →

Commonly Seen In

QuickBooksXeroSage →Custom ERP

Frequently Asked Questions

The invoice must contain the legal name of the seller/supplier.

Add the seller's legal registered name. You can also use Invoice Navigator's automatic Fixer tool to correct this instantly.

Yes, BR-05 is a critical error that will cause invoice rejection. It must be fixed before submission to ensure your invoice is accepted by the recipient's system.

Many instances of BR-05 can be automatically corrected using Invoice Navigator's Fixer tool. Upload your invoice and the tool will identify and fix common issues, including invoice must have seller name.

BR-05 is commonly seen in exports from QuickBooks, Xero, Sage, Custom ERP. These software packages sometimes generate invoices that need adjustment to meet full compliance standards.

Validate your invoice

Drop your XML here to check for BR-05

Upload XML

Auto-fix BR-05 in seconds

Upload your invoice and we fix this error automatically. Financial fields are never touched.

Fix it now Automate via API