Is PL-01 a critical error?

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

Can PL-01 be automatically fixed?

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

Error codes · CIUS-PL · Poland

PL-01Partly

Polish sellers should include NIP number

This is the rejection, word for word: „[PL-01] Polish sellers should include NIP number. This validation rule ensures Invoice compliance with CIUS-PL (Poland).“

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-PL (Poland).

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: Polish sellers should include NIP number -->
</Invoice>

After

<Invoice>
  <!-- Issue resolved per CIUS-PL (Poland) -->
</Invoice>

What the finding looks likeExample

FindingNeeds your check · PL-01

From youThe correct figures

ThenChecked again

ProofSHA-256 and /verify link after the check

Often appears together with

PL-02Polish invoices should be prepared for KSeF