SYSOUT and DO SYSOUT statements have the following differences:
The SYSOUT statement is applied only if the job ends OK. DO SYSOUT statements are associated with accompanying ON statements and are applied only if the accompanying ON step and code criteria are satisfied.
A SYSOUT statement is displayed in each job scheduling definition. A DO SYSOUT statement is not displayed unless requested. To request a DO SYSOUT statement, type SYSOUT in an empty DO field and press Enter.
Only one SYSOUT statement can be defined in the job scheduling definition. An unlimited number of DO SYSOUT statements can be requested.
The SYSOUT OP subparameter is equivalent to the DO SYSOUT OPT subparameter.
The SYSOUT data subparameter is equivalent to the DO SYSOUT PRM subparameter.
The SYSOUT FROM subparameter is equivalent to the DO SYSOUT FRM subparameter.