Hello,

If you add housenumbers, please be extremely careful about not creating duplicates.

In this change, you added number 124 on the building here:
https://www.openstreetmap.org/way/244497496

But number 124 was already set on the building here: https://www.openstreetmap.org/way/244497149/history

Duplicate numbers on the same street are not supposed to exist.  If the building structure is faulty, do not hesitate to report it—many buildings have been traced on official UrbIS data, which is the official reference in Brussels, but there are occasional mistakes in official data— StreetComplete is usually a nice app but it can ruin the database integrity easily too; I think there is an option that says "this building has no number".

Thanks in advance.  Have a nice day.