IDC31704I DATA SET IS ALREADY OPEN FOR OUTPUT OR WAS NOT CLOSED CORRECTLY

Explanation
The data set is already OPEN for output by a user
on another system, or was not previously closed.

System action
The data set is closed, and processing ends.

Programmer response
If the data set is OPEN for output, it must
be closed before running EXAMINE. If it is not OPEN for output, you
must run verify (via the VERIFY command) before running EXAMINE.

Source
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