The principle is called collateral estoppel or issue preclusion. Doctrines such as claim preclusion prevent re-litigation of failed complaints in alternative forums. Thus, the right does not prevent the preclusion of defense witnesses as a discovery sanction. Additionally, some clinicians have questioned the preclusion of ODD when conduct disorder is present. This set of edges is called a trivial matching preclusion set. Preclusion requires that the issue decided was decided as part of a valid final judgment.