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Description
This warning shows up on buildings that have self-contained interpolation tags where addr:housenumber contains something like "123-456". This is the style documented at https://wiki.openstreetmap.org/wiki/Addresses#Using_interpolation to indicate that addr:housenumber is a range.
It appers to be complaining about the dash in the name, which is valid syntax according to the wiki. It looks to be related to general housenumber range handling (see also #1347).
Example:
w483340925