Multiple instances of the same view in sheets not supported. CannotCopyMustBeUniqueViewportWarn is deprecated in Revit 2023 and may be removed in future verison of Revit. Please use ViewInAModelMustBeUniqueWarn instead.

public static FailureDefinitionId CannotCopyMustBeUniqueViewportWarn { get; }

Public Shared ReadOnly Property CannotCopyMustBeUniqueViewportWarn As FailureDefinitionId
	Get

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