`BR-O-11`

EN 16931 · validation rule

EN 16931Error

The invoice has a VAT breakdown with category O (not subject to VAT) together with other VAT breakdowns. Category O can only be used for an invoice that is entirely outside the scope of VAT; the sender must remove the other breakdowns or recode the O parts (E, Z, AE …).

Field: tax_breakdown[].category (BT-118)
Rule set: EN 16931
Rule-set version: EN 16931 validation artefacts 1.3.17 · in force since 2026-10-13 · Rule-set changelog
Who has to fix it: The sender

This is a property of the file you received, so it cannot be corrected on your side without changing the document — ask the supplier to reissue it.

Check your own invoice

Drop the file that failed. We parse it, run the official rule sets against it and list every finding with a fix — 20 invoices per day, no key, nothing stored.

Open the live demo

Same explanation over the API: GET /v1/rules/BR-O-11?lang=en