On Thu, 31 May 2012 19:31:04 -0600, Steve Comstock wrote:
>>>>>
>> Something has to specify the UNIT. Does "LIKE" establish the
>> UNIT but not the VOL? Strange.
>
>LIKE establishes neither; UNIT comes from the system default
>unit, usually SYSALLDA; VOL is chosen from available storage
>volumes.
>
Humph! I tried your DD statement on 1.12, without "LIKE":
3 //STEP EXEC PGM=IEFBR14
4 //NEWMAST DD DISP=(NEW,CATLG),DSN=&SYSUID..WORK.NEW.ZINPUTA
IEF210I JOBCARD STEP NEWMAST - UNIT FIELD SPECIFIES INCORRECT DEVICE NAME
IEF272I JOBCARD STEP - STEP WAS NOT EXECUTED.
... so our system default is either not specified or misspecified.
M&C says:
#2.121 "z/OS V1R12.0 MVS System Messages, Vol 8 (IEF-IGD)" IBM Libra.. (p1 of
3)
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___________________________________________________________________
2.121 IEF210I
Explanation: In a DD statement, the unit name subparameter in the UNIT
parameter was incorrect:
* The unit is not defined to the current system configuration, or a
demand request for a unit being added to the configuration occurred
prior to the dynamic configuration change completing.
* If the DD statement specified a cataloged data set, the unit field
in the catalog entry is incorrect.
* The DD statement did not contain a UNIT parameter for a
non-cataloged, non-passed data set.
* The DD statement did not contain a DISP parameter, indicating a new
data set, and did not contain a UNIT parameter, indicating an old
data set.
It would be helpful if the message identified the incorrect unit name
and its provenance, and distinguished among the 4 cases (5, actually:
the first represents 2) in the bullets. But that would be a step toward
self-explanatory messages, and I know the modal view on this forum
is that messages should _not_ be self-explanatory.
-- gil
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