Revit is unable to generate a truss using the current Layout Family and Truss orientation.

public static FailureDefinitionId UnableGenerateTrussByFamilyAndOrientation { get; }

Public Shared ReadOnly Property UnableGenerateTrussByFamilyAndOrientation As FailureDefinitionId
	Get

public:
static property FailureDefinitionId^ UnableGenerateTrussByFamilyAndOrientation {
	FailureDefinitionId^ get ();
}