Hello and welcome to OSM.

For your first steps on the map, I would *strongly* recommend that you do minor changes, preferably on less-critical places of the map.

Although the changeset title claims you corrected parking layout, the "and out building" part seems mysterious.  It turns out you changed the main tag on two buildings of VauxHall.  I wish to inform you that we had discussions between mappers about how to draw and tag them precisely, because UrbIS data assigns one single ref number for the whole structure, despite it is made of 3 parts.  We have special tags to deal with those particular situations.  Please do not play with major tags like this until you gain more experience with how the map works.  Small mistakes can very quickly corrupt the database, and create unwanted situations for rendering or other third-party apps.

We repaired the situation here.