You have selected elements that are already part of other System. They will be removed from the original Systems and added to this one.

public static FailureDefinitionId SelectedElementsArePartOfOtherSystem { get; }

Public Shared ReadOnly Property SelectedElementsArePartOfOtherSystem As FailureDefinitionId
	Get

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