We inform users of the electronic invoice system who log in to SEF via the Electronic Identification Portal (eID) that from 7 p.m. on January 11, 2024 to 7 a.m. on January 12, 2024, the eID system will be unavailable due to planned improvement works.

Interruptions and impaired operation of the eID system are possible for 24 hours after the completion of the work.