Frequency of Running Workflow Directory Services User/Role Validation

If you have EBS 12.1.3, I would be curious to know:

1) Is the concurrent request "Workflow Directory Services User/Role Validation" scheduled to run periodically in your production instance?

2) If YES to # 1 above, what is the frequency?  How often does the scheduled "Workflow Directory Services User/Role Validation" request run in your production instance?

Thanks,

Eric