Fixture ID: noSellerTaxId · XPath: N/A (Computed / Semantic Rule)
A line uses VAT category S (Standard rated), so the invoice must carry the seller VAT identifier (BT-31), the seller tax registration identifier (BT-32), or a seller tax representative (BG-11). You are charging VAT, so the tax authority must be able to trace the VAT you collected back to a registered taxable person.
BR-S-02Set seller.vatId (e.g. "DE123456789"). If you are not VAT-registered but have a national tax number, set seller.taxRegistrationId instead.
"seller": { "vatId": "DE123456789" }