Multiple [Room] are in the same enclosed region. The correct area and perimeter will be assigned to one [Room] and the others will display "Redundant [Room]." You should separate the regions, delete the extra [Room], or move them into different regions.

public static FailureDefinitionId RoomsInSameRegionAreas { get; }

Public Shared ReadOnly Property RoomsInSameRegionAreas As FailureDefinitionId
	Get

public:
static property FailureDefinitionId^ RoomsInSameRegionAreas {
	FailureDefinitionId^ get ();
}