Topographic elements are not visible in your current view. You can modify View Range settings in the view's Properties or Visibility settings in Visibility/Graphics. It is often easier to edit topography in a Site view or a 3D view.

public static FailureDefinitionId SiteEditPointsInvisible { get; }

Public Shared ReadOnly Property SiteEditPointsInvisible As FailureDefinitionId
	Get

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