On Fri, 11 Oct 2013 13:21:24 -0500, Doug Henry <[email protected]> wrote: > >>>". >Might one assume, then, that with SYMBOLS=CNVTSYS substitution >>is performed on the Reader/Converter system, before job initiation, >>and JCL errors could be reported. If SYMBOLS=EXECSYS, it's not >>clear whether conversion is performed before or during job step >>execution. > >What part of "in-stream symbolic substitution is performed by JES2 when an >in-stream data set is read" isn't clear that this is done at execution time >when the program reads the SYSIN input ? > It equally mean "read" by the reader/converter program (isn't that also under control of JES2?) as the program is submitted. If (I'm guessing) CNVTSYS means that the symbol values on the converter system are effective, I would expect those to be unavailable on the execution system unless the execution system can somehow query the converter system.
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