In order to ensure that the areas of intervention of each party are perfectly clear, a new protocol with Mr Jean-Luc Dufournaud, SNCF Mediator, and Betty Chappe, RATP Group Mediator, was signed on 30 September 2021. For more than twenty years, the successive and respective Mediators of the RATP and the SNCF have been working together to guide customers in the most efficient and transparent way towards the Mediator competent to examine their dispute. This protocol reaffirms their desire to make their respective areas of intervention perfectly clear, and updates their areas of intervention. In order to better inform consumers, it is available on the websites dedicated to each of the two Mediators.