DFS1730I SC=04 STACK IDENTIFIER EXCEEDS 8 CHARACTERS. TRUNCATED TO 8 CHARACTERS

Explanation
 The identifier specified on the STACK or UNSTACK
statement must be 8 or fewer characters in length.

System action
 The stack identifier is truncated to 8 characters,
and processing continues with the next operand.

Programmer response
 Correct the stack identifier, check the
corresponding STACK or UNSTACK statement, and rerun the job.