The duct/pipe has been modified to be in the opposite direction causing the connections to be invalid.
Namespace: Autodesk.Revit.DBAssembly: RevitAPI (in RevitAPI.dll) Version: 26.4.0.0 (26.4.0.0)
Syntax
C#
public static FailureDefinitionId DuctPipeModified { get; }Property Value
FailureDefinitionId
See Also
Reference