- KSeF system will not completely eliminate invoice duplicates despite archiving structured invoices
- Once an xml file is positively verified and gains structured invoice status, it permanently remains in KSeF for 10 years
- Duplicates may still be needed when invoices are delivered outside the system or during system unavailability or failures
- The traditional duplicate invoice document under article 106l of VAT law becomes obsolete for structured invoices since they cannot be deleted or canceled by users
- Only the system can automatically remove structured invoices after 10 years from the end of the year they were issued
Source: podatki.gazetaprawna.pl
Note that this post was (partially) written with the help of AI. It is always useful to review the original source material, and where needed to obtain (local) advice from a specialist.
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