The family no longer matches the properties for the System. Disconnect the family from the System?
Namespace: Autodesk.Revit.DB
Assembly: RevitAPI (in RevitAPI.dll) Version: 26.1.0.0 (26.1.0.34)
Syntax
C#
public static FailureDefinitionId FamilyDoesntMatchSystemPropertiesDisconnected { get; }