UNITCHK keyword

Use the UNITCHK keyword to control whether the utility attempts to validate the unit name for input and output log, change accumulation, and image copy data sets.

If you use SMS (or an equivalent system) to manage space in your environment, a problem can occur during dynamic allocation of input data sets. When the default UNITCHK(Y) is in effect, if the utility attempts to validate a unit name that is not defined in the operating system eligible device table (EDT), the utility flags the unit name as invalid and terminates the task. Because some valid SMS-defined units are not recorded in the EDT, a task can fail that might complete successfully if the utility did not validate the unit name. In this case, you can specify UNITCHK(N) to turn off unit validation.

Uses	Optional in the global options module and on the GLBL statement.
Related keywords	Refer also to the DSUNIT keyword.
Syntax	UNITCHK(value)
Values	Specify one of the following values: Y—Verify that unit names are recorded in the EDT. If the name is not defined, the task is terminated. N—Bypass unit name validation. If the unit name is not valid when the utility attempts to allocate the data set, the allocation fails.
Default	UNITCHK(Y)

UNITCHK keyword

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