Page History
...
You can check and fix Invalid Issue Links. These links can be of type Test Set <-> Test and Test <-> Precondition.
Archived and unarchived entities
You can check and fix invalid archived and unarchived entities (Test Runs and Tests in Test Repositories and Test Plan Boards).
An invalid archived Xray entity is the one whose Jira issue is unarchived and invalid unarchived Xray entity is the one whose Jira issue is archived (e.g a Test Run is wrongly archived if the Test Execution and Test issues are active) .
Calculated Custom Field Values
...