How do I fix KSEF-002?

Submit invoices within the 30-day window. This error involves a protected field — Invoice Navigator flags it in your pipeline so your team can correct it at the source.

Is KSEF-002 a critical error?

Yes, KSEF-002 is a critical error that will cause invoice rejection. It must be fixed before submission to ensure your invoice is accepted by the recipient's system.

Can KSEF-002 be automatically fixed?

KSEF-002 involves a financial or legal field that cannot be auto-modified by policy. Invoice Navigator detects and flags this error immediately, but the correction must be made manually in your ERP or invoicing software.

Error codes · KSeF · Poland

KSEF-002Partly

Invoice date too old for KSeF

This is the rejection, word for word: „[KSEF-002] Invoice issue date cannot be more than 30 days before KSeF submission date. Older invoices will be rejected by the system.“

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

What we doSubmit invoices within the 30-day window.

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.

What the finding looks likeExample

FindingNeeds your check · KSEF-002

From youThe correct figures

ThenChecked again

ProofSHA-256 and /verify link after the check