Poland’s National e-Invoice System API and Taxpayer Application Update on Test Environments

• The National e-Invoice System API and Taxpayer Application KSeF will be updated on test environments in Poland.
• The update will take place on October 16, 2023, from 2:00 PM to 4:00 PM on the test environment.
• The update includes changes to the API, such as a change in the response for unauthorized requests and a correction for sending certain types of invoices.
• The update also includes adjustments to the Taxpayer Application KSeF to match the new API version and to display information about errors.
• There may be temporary difficulties accessing the test environments during the update.
• Apologies are given for any inconvenience caused.

Source: podatki.gov.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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