Highlighted wall is set to be "Up to roof", however there is no roof above it that can be used.
Namespace: Autodesk.Revit.DB
Assembly: RevitAPI (in RevitAPI.dll) Version: 26.4.0.0 (26.4.0.0)
Syntax
C#
public static FailureDefinitionId NoUptoRoofForWall { get; }