DFS1735I SC=08 'UNSTACK' STATEMENT CANNOT BE STACKED. 'UNSTACK' STATEMENT IGNORED

Explanation
 An UNSTACK statement was encountered while stacking
was in progress. Nested stacking is not allowed.

System action
 The UNSTACK statement is ignored, and stacking
continues for the current STACK ON statement.

Programmer response
 Rearrange the source statements in the
program so that nested stacking is not required, and rerun the job.