- The test environment for the National e-Invoice System and Taxpayer Application KSeF API is now functioning correctly.
- The issues experienced on February 6, 2025, with access and functionality of the test environment have been resolved.
- We apologize 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.