Some View Regions were removed. When the size of a View Region becomes zero, it is removed from the view.
Namespace: Autodesk.Revit.DB
Assembly: RevitAPI (in RevitAPI.dll) Version: 26.4.0.0 (26.4.0.0)
Syntax
C#
public static FailureDefinitionId ZeroLengthViewRegionsRemoved { get; }