Can ISPF be started under BC1PTMP0 in a foreground processor

Document ID : KB000011477
Last Modified Date : 14/02/2018
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Question:

Given a CLIST (which is intended to run under TSO batch TMP like IKJEFT01) that issues ISPSTART or equivalent command to start ISPF in the TSO/BATCH address space, could it be run in foreground by BC1PTMP0 processor utility?

Answer:

That is not possible because, when the CLIST is executed in a foreground processor, ISPF is already active in the address space and any subsequent invocation of commands like ISPSTART will fail with a message like:

 

Command rejected - 'ISPSTART' command not supported under ISPF.

ISPD226  Invalid command - Commands such as LOGON, LOGOFF, SPF, ISPF, etc. are not permitted.