Can't complete operation. Massing can only exist in one Workset. Change Workset of Massing to match in Local and Central Models.
Namespace: Autodesk.Revit.DB
Assembly: RevitAPI (in RevitAPI.dll) Version: 26.4.0.0 (26.4.0.0)
Syntax
C#
public static FailureDefinitionId MultipleMassing { get; }