It was for the Dedicated Server Setup!
I have add in the ..\DCS.openbeta_server\Config\option.lua File
["Tacview"] = {
["tacviewBookmarkShortcut"] = 0,
["tacviewClientTelemetryPassword"] = "",
["tacviewCompressionLevel"] = 1,
["tacviewDataRecordingEnabled"] = true,
["tacviewDebugModeEnabled"] = false,
["tacviewHostTelemetryPassword"] = "",
["tacviewPlaybackDelay"] = 0,
["tacviewProfilingPeriod"] = 600,
["tacviewRealTimeTelemetryPort"] = "42674",
["tacviewRecordClientsSessionsEnabled"] = false,
["tacviewRemoteControlPassword"] = "",
["tacviewRemoteControlPort"] = "42675",
["tacviewTerrainExport"] = 0,
},
it is just a copy & paste from my OpenBeta setup