Hello VLD190
In addition to relation/13999702, relation/253825 is also affected. I don't have the knowledge about the local conditions to continue to work on them properly.

Sorry for my misstake from source

It is unnecessary because three touching outers will generate an error in the OSM inspector.
Having three duplicates is correct. You could also create a single land area with the associated tags

Hi modelrocketry,

when you think this is wrong, repair it please. You have the better knowledge.

please fix the landuse from the relation/1321524

please change the landuse tag from relation/12308597

Sorry for this misstake

the source is http://tools.geofabrik.de/osmi/