Require Work Item Owner when Planned For Is Specified
How does one make one work item field required when another field goes from unassigned to a value? We would like to enforce that all work items must have an owner specified when the planned for field goes from unassigned or backlog to a Release or Sprint value. Short of making Planned For required on a state transition I see no way to accomplish this.
Accepted answer
you would have to write a server side advisor extension to create this enforcement.