Modifying OUTPUT JCL and DD statements

OUTPUT JCL and DD statements that follow the calling EXEC statement

Override, nullify, or add parameters to OUTPUT JCL and DD statements in the procedure, or
Are added to the procedure.

These changes affect only the current execution of the job step; the procedure itself is not changed. When an OUTPUT JCL statement is modified, the sysout data set is processed according to the parameters as modified by the overriding statement.

In a procedure, to ensure that OUTPUT JCL and DD statements are overridden correctly by modifying statements, place the OUTPUT JCL statements before the DD statements in each step of the procedure.