Users that are going to use SSH Tectia Server for IBM z/OS from a remote host must have an OMVS segment in their RACF profile. In addition, if a user is going to access the USS shell or execute USS shell commands or run SSH Tectia Server for IBM z/OS client programs on the mainframe, the user must have a home directory in the USS file hierarchy. The requirements are the same as for accessing USS with Telnet on port 1023.
z/OS users that are going to use the SSH Tectia Server for IBM z/OS client programs to access remote hosts need the same OMVS environment.
If you want to customize the environment per user for file transfer use, see SSH Tectia Server for IBM z/OS User Manual.