IKJTSOEV sets up the TSO/E environment in background mode; command invocation is identical to background processing under the TSO/E batch facility. Therefore, batch facility conventions and restrictions for prompting and command usage apply. The TSO/E environment established by IKJTSOEV will only use default authority attributes for the protected step control block (PSCB) and the user profile table (UPT). For more information on TSO/E background processing, see z/OS TSO/E Command Reference, particularly, the PROFILE command.

Background mode does not support TSO/E services that perform full- screen terminal I/O using the TPUT, TGET, and TPG macros. It does support supervisor and inter-user communication among terminals using TPUT with the ASID, ASIDLOC, or USERIDL parameters. The ISPF Dialog Manager display facilities cannot be used, because they perform full- screen terminal I/O at the user's terminal.