z/OS User Exits › Customizing and Installing z/OS User Exits › MKUEXITS—Make COBOL Runtimes (User Exits DLLs) › Customizing the Exit

Customizing the Exit

There can only be one user exit runtime DLL (that is, TIRTERAZ, TIRMTQBZ…) in the specific target region (CICS, IMS, TSO, BATCH). There are notes in the sample procedure with specific information about customizing the JCL. Various steps in the procedure can be modified.

• Not all user exits need to be modified and replaced. If a user exit compile step is removed, then the corresponding REPLACE and INCLUDE statements must be removed for the same user exit(s).
• Ensure that the data set pointed to the SYSLMOD statements for linkedit steps (that is, LKTERMA, LKMTQB, ….) are of type Library since the user exit runtime DLLs are a Program Object (format 3).