Revit cannot create a rectangular grid by intersecting the current selection of elements (levels, reference planes, or curves drawn on reference planes) with the surface. Make sure that curves do not form closed loops. It is helpful if curves start and end outside the surface, rather than inside it.

public static FailureDefinitionId DividedSurfaceIgnoresSplitters { get; }

Public Shared ReadOnly Property DividedSurfaceIgnoresSplitters As FailureDefinitionId
	Get

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