Hello,

When a house number is correctly located within a building, its ref:UrbIS matches the id of the building.

But this is not the case here.  The official ref:UrbIS attached to Rue au Bois/Bosstraat 365B is 5041433, and that may not be changed.

Should there be an error in UrbIS, the best practice is to document the change through another tag.  Here is a standard tag I applied to several nodes (to make it easy to query them):
"note=Location established through a survey, despite UrbisAdm locates it in another building"

Hope this helps.