Password authentication is the most commonly used form of user authentication. There are two cases where it cannot be used in SSH Tectia Server (M): when running client programs from JCL or the TSO OMVS shell.
When running client programs from JCL there is no facility for getting the password from the user. Use a plaintext private key and public-key authentication.
Password authentication is not available when running a client program from the TSO OMVS shell because the shell cannot guarantee that the password will be hidden on the screen. Use a Telnet shell or Secure Shell, or set up public-key authentication with a plaintext private key.