Your document contained a Massing element which has been upgraded to a Mass instance. Please review the documentation on the new enhanced Mass capabilities to understand the implications of this change.

public static FailureDefinitionId UpgradedMassingWarning { get; }

Public Shared ReadOnly Property UpgradedMassingWarning As FailureDefinitionId
	Get

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