UBL-CR-606: Line VAT category should not have a currency code

What it means

The invoice currency code (BT-5) is a document-level field. This rule checks that the tax scheme in the line VAT information (BG-30) does not carry a currency code of its own (cbc:CurrencyCode). It looks at every line of the invoice or credit note.

Why it matters

The tax scheme on a line is not where EN 16931 records the invoice currency or VAT accounting currency.

How to fix it

Delete cbc:CurrencyCode from cac:TaxScheme under cac:Item/cac:ClassifiedTaxCategory on every affected invoice line or credit note line. If VAT has to be shown in a second currency, use the document-level VAT accounting currency code (BT-6) and invoice total VAT amount in accounting currency (BT-111), not this line element. Check the corrected file again.

The rule as published

A UBL invoice should not include the InvoiceLine Item ClassifiedTaxCategory TaxScheme CurrencyCode

Where this rule applies