FYI, I ended up removing the parking relation again you created. See https://www.openstreetmap.org/changeset/149643976.

Please note the following:

a) When using relations, tags should be moved onto the relation, rather than exist on both, the relation and it's members. amenity=parking, for instance, should not exist on the relation and members.
b) In case of amenity=parking, it's not designed for use with relations and you should avoid using them on relations when possible. See "Used on these elements" at https://wiki.openstreetmap.org/wiki/Tag:amenity%3Dparking.

Welcome to OpenStreetMap and happy mapping,

Peter