Hello miluethi, please don't add fragmented "boundary=administrative" relations based on pure guesswork like you did here in https://www.openstreetmap.org/relation/17545087 - it is ok to guess landuse=residential from imagery but you have no clue where any actual boundary is, or whether the "boundary" of San Cristóbal actually is three different parts with some non-San Cristóbal territory in between. This is a pseudo accuracy that doesn't help OSM.