Fix VAT number wrong country format
EU VAT numbers have country-specific formats (e.g. DE USt-IdNr., FR TVA). Wrong format or country prefix causes validation failure.
Common causes
- Wrong country code prefix.
- Invalid length for country.
- Check digits don't match.
How to fix
- Use correct 2-letter country prefix.
- Validate format with VAT Number Checker.
- For VIES verification use ec.europa.eu/vies.
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