I'm trying to use a UNIX (USS) directory (actually NFS mounted) for
Binder input.  In some cases it works well; in others where I see
no apparent differences other than the pathname I get:

 IEW2763S DE07 FILE ASSOCIATED WITH DDNAME LIB001 CANNOT BE OPENED BECAUSE THE 
FILE DOES NOT EXIST OR CANNOT BE CREATED.
 IEW2302E 1031 THE DATA SET SPECIFIED BY DDNAME LIB001 COULD NOT BE FOUND, AND 
THUS HAS NOT BEEN INCLUDED.

If I reconstruct what I believe to be the full pathname, I can open it and read 
it
after the Binder has failed.  LISTALC shows me that LIB001 is allocated to the
intended USS directory.  There's no additional information in SYSLOG.

It would be valuable to have return value and ERRNO from open(1).  Binder
doesn't tell me.  M&C hints that IEW2763S corresponds to ENOENT while
giving no explanation for the DE07 token appearing in the message.  If a
file is opened successfully, its pathname appears in DATA SET SUMMARY;
if it fails, DATA SET SUMMARY shows nothing.  This is quite backward from
what the programmer needs for diagnosis.  I specified:

    1z/OS V1 R12 BINDER     15:52:30 SUNDAY OCTOBER  7, 2012
     IEW2278I B352 INVOCATION PARAMETERS - 
MAP,SIZE=(400K,96K),XREF,REUS,RENT,REFR,LIST=ALL

Is there an option that would give me more complete information?

Thanks,
gil

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