A Failed to connect to the server using SSL error occurs when integrating IT Optimize (ITO) as an external system in ITA.
This error is usually caused by using an older version of ITO that does not support TLS 1.2. Older ITO releases use TLS 1.0 so return SSL errors when connecting to ITA.
ITO 7.5.6 and newer support TLS 1.2.
It is recommended that you use the latest versions of both ITO (v7.5.9) and ITA.