HFPK3213E SEGMENT HIERARCHICAL SEQUENCE ERROR WAS DETECTED.
- SDEP OR DDEP MUST BE AFTER ROOT SEGMENT.
- USR RECORD NO: `nnnn`
- DDNAME: `ddname`, DSNAME: `dsname`

Explanation
 A segment hierarchical sequence error was found
in the unloaded segment records data set.

System action
 The job ends with an abend code of 3003.

User response
 Correct the unloaded segment records data set,
and rerun the job. 