NOW-DSC-DOMAIN_CONTAINS_INVALID_REFS
Severity	Error
Root Cause	References in either the Domains or Contains columns are pointing to nonexistent or deleted domains.
Effect	Unnecessary delay or degradation of performance
Corrective Action	Log onto your instance. Navigate to Domain Separation Center. Select the Errors widget. Open the Domain Contains Invalid References audit record. For each sys_id in the Details list on the right, either remove and re-create the record or repair the record to point to valid references.