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Warning

UBL-CR-511: The tax scheme should not have a currency code

In short

Warning: worth checking.

UBL-CR-511 means a tax scheme in a document-level tax subtotal has a currency code (cbc:CurrencyCode), which EN 16931 does not use there. It is a warning. Remove this element without removing the invoice currency code.

On this page

What it means

The rule checks cac:TaxScheme inside cac:TaxCategory under each document-level cac:TaxTotal/cac:TaxSubtotal for cbc:CurrencyCode. It applies to UBL invoices and credit notes. This is separate from the invoice currency code (BT-5) and the VAT accounting currency code (BT-6).

Why it matters

EN 16931 does not use a currency code on the tax scheme in a document-level tax subtotal.

How to fix it

Delete cbc:CurrencyCode from cac:TaxTotal/cac:TaxSubtotal/cac:TaxCategory/cac:TaxScheme at document level. Check that the invoice currency is in cbc:DocumentCurrencyCode (BT-5). If VAT also has to be shown in another currency, use cbc:TaxCurrencyCode (BT-6) together with the VAT amount in that currency (BT-111). Recheck the file.

Once the file is corrected, check it again for free: Validate an invoice against EN 16931

Or fix the invoice in a form and download the corrected file, for 1 credit: Fix a rejected e-invoice

The rule as published

A UBL invoice should not include the TaxTotal TaxSubtotal TaxCategory TaxScheme CurrencyCode

Where this rule applies

Rule set Version
EN 16931 (UBL) 1.3.17
EN 16931 (UBL credit note) 1.3.17
XRechnung 3.0 (UBL) 3.0.2
XRechnung 3.0 (UBL credit note) 3.0.2
Peppol BIS Billing 3.0 (invoice) 2026.5
Peppol BIS Billing 3.0 (credit note) 2026.5
SI-UBL 2.0 / NLCIUS (invoice) 2.0.3.13
SI-UBL 2.0 / NLCIUS (credit note) 2.0.3.13
France CTC (UBL invoice) 1.4.0-04
France CTC (UBL credit note) 1.4.0-04
CIUS-RO UBL Invoice 1.0.9 1.0.9
CIUS-RO UBL Credit Note 1.0.9 1.0.9
Rule text from phive-rules 4.6.4.

Check your file

Drop your e-invoice to see whether UBL-CR-511 still fails, and which other rules do.

Updated 6 November 2026