The current shape is only bent in a single plane. A multi-planar definition is not required. Please redefine the shape on the top plane only.
Namespace: Autodesk.Revit.DB
Assembly: RevitAPI (in RevitAPI.dll) Version: 26.4.0.0 (26.4.0.0)
Syntax
C#
public static FailureDefinitionId PlanarMultiPlanarShape { get; }