Service maintenance on test environment of KSeF API and Taxpayer Application may cause temporary access issues.

• Service work will be conducted on the test environment of the National e-Invoice System API and the Taxpayer Application KSeF on November 15, 2023, from 11:00 to 12:30.
• Temporary difficulties in accessing these environments may occur during this time.

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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