A VAT breakdown of category G (export outside the EU) must contain an exemption reason (BT-120) or code (BT-121).
Add the exemption reason, e.g. "Export outside the EU" or the VATEX code vatex-eu-g.
The Billhorse validator checks XRechnung, ZUGFeRD and Factur-X right in your browser — your file is never uploaded.
Open the validator ← All validation rules
Rule source: EN 16931 / XRechnung (KOSIT) or Billhorse check (BH-*).