- There are issues with the test environment of the National e-Invoice System.
- The issues started on February 6, 2025.
- Functionality is being restored.
- An update will be published as soon as restoration of full access is completed.
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.