A Point is outside of the Surface boundary. Insert the Point on the boundary instead, and then drag it to the desired location.
Namespace: Autodesk.Revit.DB
Assembly: RevitAPI (in RevitAPI.dll) Version: 26.2.0.0 (26.2.0.0)
Syntax
C#
public static FailureDefinitionId PointNotInSurface { get; }