About IPEX
Subsidiarity checks can only be successful if the requisite number of votes is achieved in several parliaments or chambers. This requires national parliaments to cooperate closely across national borders, with a rapid exchange of opinions and close contact with the European Parliament.
Amongst other ways of interchange there is the IPEX communication platform, which allows an exchange of information on the positions taken by other parliaments. At the administrative level, information is mostly exchanged by way of the Permanent Missions of national parliaments in Brussels.