DFS1733I SC=08 NESTED 'STACK ON' STATEMENT IGNORED

Explanation
 A STACK ON statement was encountered while stacking
was in progress for another STACK ON statement. Nested stacking is
not allowed.

System action
 The nested STACK ON statement is ignored, and
stacking continues for the previous STACK ON statement.

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