Constraints between geometry in the family can behave unpredictably on parameter modification. To make the family reliable, constrain geometry to levels, reference planes, or reference lines.
Namespace: Autodesk.Revit.DB
Assembly: RevitAPI (in RevitAPI.dll) Version: 26.2.0.0 (26.2.0.0)
Syntax
C#
public static FailureDefinitionId UnstableConstraintInFamily { get; }