errorATpeppol-bis-3

AT-R-002:Austrian UID number format invalid

Austrian VAT number must be ATU + 8 digits.

We can help you fix this

NEEDS INPUT

Requires user to provide correct Austrian UID number format (ATU + 8 digits)

Simple form - we handle the XML for you
Upload and Answer Questions

Why This Error Matters

Austrian UID required for VAT compliance.

How to Fix It

1

Check format

Must be ATU followed by 8 digits

2

Verify UID

Check with Austrian business register

Technical Details

XPath: //cac:PartyTaxScheme/cbc:CompanyID

Common Causes

  • Wrong format
  • Missing ATU prefix
  • Wrong digit count

Frequently Asked Questions

Austrian VAT number must be ATU + 8 digits.
Use format ATU + 8 digits. Invoice Navigator can help identify and fix this issue.
Yes, AT-R-002 is a critical error that must be fixed.

See Also

🇦🇹

E-Invoicing in Austria

Requirements & common errors

Last updated: 18 January 2026

Share this guide: