Is BE-03 a critical error?

BE-03 is a warning that may not always cause rejection, but it indicates a potential compliance issue that should be addressed.

Can BE-03 be automatically fixed?

BE-03 affects financial fields and cannot be automatically modified. This must be corrected in the source invoicing system.

Error codes · CIUS-BE · Belgium

BE-03Partly

Belgian VAT numbers must be in correct format

This is the rejection, word for word: „[BE-03] Belgian VAT numbers must be in correct format. This validation rule ensures Invoice compliance with CIUS-BE (Belgium).“

What to have readyThe correct figures from your bookkeeping; we show you which field is affected.

What we doReview your Invoice XML structure and correct the issue described by this rule. Check relevant cbc: and cac: elements per CIUS-BE (Belgium) (BE-03).

Choose the rejected invoiceor drop it here

XRechnung XML or ZUGFeRD PDF. Checking is free · corrected file €1.90 · the first every 30 days is free · no sign-up.

If you enter it yourself in your invoicing software

Before

<Invoice>
  <!-- Issue: Belgian VAT numbers must be in correct format -->
</Invoice>

After

<Invoice>
  <!-- Issue resolved per CIUS-BE (Belgium) -->
</Invoice>

What the finding looks likeExample

FindingNeeds your check · BE-03

From youThe correct figures

ThenChecked again

ProofSHA-256 and /verify link after the check

Often appears together with

BE-01Belgian B2B invoices should use Peppol BIS Billing 3.0 BE-02Belgian sellers should include enterprise number (KBO/BCE)