InvoiceVerify

IV-VAT-02

VAT number check digit does not match

WarningInvoiceVerifyBT-31BT-48BT-63

Also available in:NederlandsFrançais

What it means

The VAT number has the expected format, but its check digit fails the national calculation. This is a warning of a possible typing error, not confirmation that the registration is inactive.

Typical causes

  • Two digits were swapped.
  • A digit was copied incorrectly from a customer record.

How to fix it

  1. Compare the number with an official document or confirm it with the business.
  2. Check it in VIES where applicable.
  3. Correct the recorded number and validate again.

See it in action

These sample invoices break this rule. Open one to see the exact line.

What the rule says (technical)

The VAT identifier has the right shape but its check digit does not match the national algorithm — it is most likely a typo.

Verify the number in VIES or with your customer and correct the digits.

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