Processing errors

ISPF terminates with an error message if a required library is not available. The ISPSTART command must also be invoked naming either a CLIST, PGM function, or selection panel. If no dialog is specified, a message is issued. These messages are directed to the data set defined by the SYSTSPRT DD statement.

Errors encountered during background dialog execution are handled in the same manner as errors encountered during foreground execution. Messages normally written to the ISPF log data set for severe errors are also written to the SYSTSPRT file. This is useful when executing a CLIST dialog because any error messages are listed immediately after the ISPEXEC service in which the error occurred.

If a function encounters an abend, the entire ISPF batch job stream terminates. A message is issued to the SYSTSPRT file indicating the type of abend.