- The Czech Financial Administration will replace the EET 2.0 Playground test environment’s TLS server certificate from an OV certificate to an EV certificate during maintenance on October 22–23, 2026.
- The change is intended to strengthen identity verification and align the test environment with the planned production security setup.
- Service functionality and access methods are unchanged, but POS/fiscal software that pins the certificate or uses a restricted trust store may need adjustments to avoid TLS handshake failures.
- The Playground is used to test integration with the Czech EET 2.0 electronic sales registration system ahead of production certificates becoming available on November 1, 2026 and the main regime starting January 1, 2027.
Source: fiscal-requirements.com
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.
