Reporting application on the public space of the 8 cities of Western Greater Paris (GPSO): Boulogne-Billancourt, Chaville, Issy-les-Moulineaux, Marnes-la-Coquette, Meudon, Sevres Vanves, Ville d'Avray: illegal dumping, pothole, broken bollard, lighting or traffic lights down, vandalized bus shelters, lost object in a park ... users are informed about the processing of their reporting.