Do not code the following parameters with the FREE parameter.

If the DD statement specifies FREE=END and a DISP subparameter of PASS, the data set is not unallocated until the end of the job or until used for a later DD statement with a disposition of other than PASS.

Do not specify FREE=CLOSE on a DD statement with a ddname of JOBLIB or STEPLIB; CLOSE is ignored.

If you specify SPIN=NO with FREE=CLOSE, the sysout data set will be unallocated, but not printed until the end of the job.

When you specify SPIN=UNALLOC with FREE=CLOSE, the sysout data set is available for printing immediately when you explicitly close or dynamically unallocate the data set. If you do not explicitly close or dynamically unallocate the data set, it will be available for printing at the end of the step.

If you specify SPIN=UNALLOC with FREE=END, the sysout data set is unallocated at the end of the step, and is made available for printing then. If you dynamically unallocate the sysout data set, the system makes it available for printing immediately.

If you specify SPIN=NO with FREE=END, the system makes the sysout data set available for printing at the end of the job, regardless of when the data set is unallocated or closed.