Objects or records were not restored after a Salesforce restore operation ran.
Symptoms
The following issues can cause objects and records to fail:
Salesforce does not allow the restoration of some standard objects.
A metadata mismatch from the source organization to the destination organization. For example the Profiles, Users, and RecordType metadata are mismatched.
Validation and duplication rules, Apex triggers, and workflows.
A license limit or a storage limit.
Resolution
If objects or records fail to restore, the restore operation continues. The software generates events, and the job is marked as Completed with Errors.
Review the events and correct the issues.
Examples:
To correct a metadata mismatch in your Salesforce sandbox, follow the instructions on the Salesforce help site to Refresh Your Sandbox.
Disable the validation and duplication rules, Apex triggers, and workflows.