False "Invalid addr:housenumber value" for POIs with addr:place

[Yogurt4]

Item: 2060 street numbers
Class: 10
Like in https://osmose.openstreetmap.fr/en/issue/1a597ea7-aaaf-e904-0eae-b413c0fb674b
OSM link

The Suomenlinna islands near Helsinki don't have street names but they do have house numbers. According to OSM Wiki, the addr:place tag is used here instead.

Please accept addr:place in addition to (or in place of) addr:street for such locations.

[Famlam]

Thank you for the report!
The issue is not related to addr:street/addr:place but to the housenumbers, as they start with A-E rather than a number.

The text on Wikipedia says

The streets in Suomenlinna do not have names. Postal addresses consist of a letter designating the island (A=Kustaanmiekka, B=Susisaari, C=Iso Mustasaari, D=Pikku-Mustasaari and E=Länsi-Mustasaari) and the house number,

This reads to me as if the letter is not supposed to be part of the (addr:)housenumber. Is this correct?

Or was there any discussion in the Finish community to tag it like this? (If so, we can add an exception for this region)

[Yogurt4]

Hi,

These are exactly the "numbers" written on the plates on each building, like "C 15".

I guess, this is why they were tagged this way from the very beginning, years ago. And left this way by the Finnish mappers.

I've only moved Suomenlinna from addr:street (which it is not) to addr:place.