This exit allows you to process requests for the scheduler JCL facility prior to JES2's processing of the request. A function code of 70 on a subsystem IEFSSREQ call with SSSFSWBM in field SSSFREQF invokes the exit. Exit 45 allows the installation to:

• Examine the request to determine if the system should continue to process the request for SJF services
• Redirect error messages for a request.