The Finance Ministry has postponed the KSeF’s entry into force until February and April 2026
Businesses should continue to prepare for KSeF implementation
Official Certificate of Receipt (UPO) confirms the delivery of an electronic shipment to the recipient
The UPO is the official acknowledgment of receipt of an invoice by the KSeF system
Downloading the UPO for each invoice in KSeF is not necessary, as the data is already available when the invoice is sent
Archiving the UPO can be cumbersome, especially when sending a bunch of invoices
The limit of UPO requests via the API is 50 per hour, which can be problematic with a large number of invoices
Source: crido.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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