Can't create Group because it contains multiple copies of same Group.
Namespace: Autodesk.Revit.DB
Assembly: RevitAPI (in RevitAPI.dll) Version: 26.1.0.0 (26.1.0.34)
Syntax
C#
public static FailureDefinitionId GroupsHasCycle { get; }
public static FailureDefinitionId GroupsHasCycle { get; }