Hi @Swati_Verma .
Please use Direct Connection.
You will need IP Address and port. You will get them by just opening Bluezone the normal way and then check Session/Connection configuration menus in the app. Copy those and use them in a Terminal Session activity configured for Direct Connection (also see this: UiPath’s Terminal Session connectivity with IBM Mainframe is intermittent - #4 by cornel )
Success with Bluezone is very much dependent on which version of Bluezone it is, even with EHLL. Safest way is to eliminate that variable out of our equation completely. That is Direct Connection.