Corrections

When to issue a corrective invoice, how to prepare one, and in which period to recognise its effect.

• When to issue a correctionHow a correction differs from cancelling an invoice, what types of corrections exist, and in which period their effect is recognized.
• Cancelling a wrongly sent invoice (zeroing correction)How to withdraw an invoice mistakenly sent to KSeF and reissue it with the correct details — especially when the error is in the NIP.
• Bulk correctionsHow to fix and send multiple invoices in one batch, matching correction documents to the original invoices.