IDC3596I THE DATA SET SPECIFIED IN THE EXPORT PARAMETER IS NOT USABLE

Explanation
The data set specified in the EXPORT command has
been marked as not usable by a DELETE FORCE operation or by a RESETCAT
operation because of space occupancy conflicts.

System action
Processing of the command is ended.

System programmer response
  If the error recurs and the program
is not in error, search problem reporting data bases for a fix for
the problem. If no fix exists, contact the IBM® Support Center. Provide the JCL and the SYSOUT
output for the job.

Programmer response
This data set cannot be exported under current
catalog conditions. If you wish to recover the data, use the REPRO
command.

Source
DFSMSdfp

Module
IDCXP01