An international complaints procedure is a formal process by which a person or, in some cases, a group of individuals, can make an official complaint to an international monitoring mechanism, a committee or a court. Such bodies have been established for each of the various human rights conventions. These treaty bodies make it possible for individuals to invoke and possibly obtain a legal review of their claim that one or more States have violated their human rights and / or freedoms under a specific convention. Such complaints procedures are referred to as "complaint", "communication", "application" or "petition" depending which human rights convention one relies on.