This exit, from the prescan phase of the converter/interpreter (module IATIIPR), provides you with the job information passed to the prescan phase by the C/I compatibility module (IATIICM). The information provided consists of JOB statement data plus the contents of the SMF user field within the current job management record scheduler control block. You have the opportunity of examining this information before processing is begun.

On completion, you have the option of either continuing normally or having the job fail.

You can use this exit during C/I processing of the JOB JCL statement to allow SWA blocks to be moved above 16 megabytes in virtual storage in the job's address space. The exit lets you change the setting of field IDDGTRC2 (which is ORed with field IDDSWA) in data area IATYIDD. Field IDDSWA contains the current setting for where SWA is located.