Hello, It was unnecessary to map the building as a multipolygon, the outer footprint would have sufficed. I think the dark spot in the middle is caused by a feature on the roof casting a shadow. In some places you mapped solar panels as buildings. Move footpritns to the base of buildings; in this case you shortened a valid highway, becasue you ran out of room to fit all the features which exist at the ground level. Hope this helps. Please keep this feedback in mind when contributing in future. Thank you for your contribution. If you want to experience the OSM community or to get timely feedback from other mappers; I recommend that you attend a mapathon. You can find events here https://osmcal.org/
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            #REVIEWED_BAD #OSMCHA
            Published using OSMCha: https://osmcha.org/changesets/171524878
            