To enable routine scheduling of data validation runs, choose Data Administration from the Maintenance menu. Then click on Scheduling. If scheduling is active, click on the Stop button. Then select the Data monitoring strategy of All daily. Finally enable scheduling by clicking on the Start button.
During a scheduled validation run, those validation rule groups will be evaluated that have one or more user groups defined for alerts. Validation rule groups that have no user groups defined for alerts will not be run during a scheduled run.