eFACT: Communication via TLS
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Currently, for querying invoice statements via WS in the production environment, the SSLv3.0 and TLS v1.1 and v1.2 protocols are enabled. In the pre-production environment only communication via TLSv1.2 is now allowed.
The day June 2, '21, the update will be done in the environment of PRODUCTION to only allow communication via TLSv1.2."