Hello,

to clarify what bxl_forever meant, you can have a look here: https://osmose.openstreetmap.fr/en/map/#loc=16/50.899214/4.331348&item=1xxx&level=1%2C2%2C3

All those validation warnings appeared after your recent edits in this area. Most of them are duplicated nodes that should be merged together, but there are also, among other issues, invalid polygons that self intersect, like this one: https://www.openstreetmap.org/way/1321784726#map=18/50.900367/4.332465

