Most of the Batch processing logic is in the option panels, CLISTs, and skeletons to make modifications as easy as possible. Before modifying existing options or adding new ones, you should study the distributed panels, CLISTs, and skeletons to understand the relationships among them.

ISPF does not attempt to diagnose all possible types of skeleton coding errors. Some types of errors are detected, and the appropriate error messages are displayed, but in many cases coding errors must be debugged by inspection of the generated JCL. To perform this inspection, enter the CANCEL command when the Batch Selection panel with Job Step Generated is displayed, and then browse the temporary data set that contains the generated JCL. (The temporary data set is closed, but not freed or erased, when the CANCEL command is specified.)