Validation rules

BR-AE-10

Lines use VAT category "AE" (reverse charge) but no exemption reason (BT-120) or reason code (BT-121) is given.

Rule
BR-AE-10official EN 16931 / XRechnung rule
Severity
error
Business term
BT-120 — VAT exemption reason
Field in your JSON
invoice.tax_exemptions[*].reason

How to fix it

Add invoice.tax_exemptions: [{ category: "AE", reason: "Reverse charge" }] (or reason_code "VATEX-EU-AE").

BR-AE-10 auf Deutsch — was bedeutet der Fehler?

Positionen verwenden die Kategorie "AE" (Steuerschuldumkehr / Reverse Charge), aber es fehlt der Befreiungsgrund (BT-120) oder Befreiungscode (BT-121).

So beheben Sie den Fehler

Ergänzen Sie invoice.tax_exemptions: [{ category: "AE", reason: "Steuerschuldnerschaft des Leistungsempfängers (§ 13b UStG)" }] — oder reason_code "VATEX-EU-AE".

Official sources

Every 422 from the API lists the rule id, the path in your request JSON, a plain-language message and a suggested fix — see the docs overview for the report format.