Use the TSO/E Service Facility initialization routine (IKJEFTSI) or its alias (TSOLKI) to create a command/program invocation platform. This routine returns a token to the caller that identifies the command/program invocation platform that was created. This token must be passed to the TSO/E Service Facility routine (IKJEFTSR) to enable the commands or programs to execute on the command/program invocation platform. This token is valid only for calls to IKJEFTSR that occur on the same task level as that for which the initialization routine was invoked.