Hi,
https://www.openstreetmap.org/way/1342673818 is not a riding centre (leisure=horse_riding), it is an outdoor riding arena and should be tagged with leisure=pitch + sport=equestrian. The riding centre is represented by https://www.openstreetmap.org/node/6898140252 and should not be mapped twice.

In JOSM you can tag a riding arena with the preset for sport=equestrian.

See also https://wiki.openstreetmap.org/wiki/How_to_map_a#Riding_centre_(equestrian)