- Update of the National e-Invoice System API on the test environment
- Planned update on May 16, 2024, from 09:00 to 19:00 on the test environment
- Update includes new features such as generating UPO in v4 version, validation for batch invoice packages, and additional information in response services
- Possible temporary access difficulties to the test environments during the update
- Apologies 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.
