Is IT-01 a critical error?

IT-01 is a warning that may not always cause rejection, but it indicates a potential compliance issue that should be addressed.

Can IT-01 be automatically fixed?

IT-01 affects financial fields and cannot be automatically modified. This must be corrected in the source invoicing system.

Error codes · CIUS-IT · Italy

IT-01Partly

Italian sellers should include Codice Fiscale or Partita IVA

This is the rejection, word for word: „[IT-01] Italian sellers should include Codice Fiscale or Partita IVA. This validation rule ensures Invoice compliance with CIUS-IT (Italy).“

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-IT (Italy).

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: Italian sellers should include Codice Fiscale or Partita IVA -->
</Invoice>

After

<Invoice>
  <!-- Issue resolved per CIUS-IT (Italy) -->
</Invoice>

What the finding looks likeExample

FindingNeeds your check · IT-01

From youThe correct figures

ThenChecked again

ProofSHA-256 and /verify link after the check

Often appears together with

IT-02Italian invoices should include SDI recipient code IT-R-001Italian suppliers must have a tax registration identifier (BT-32) between 11...IT-R-002Italian suppliers must provide a postal address line 1. The street address...