How do I express if the building has 2 levels on OpenStreetMap

Hello!
I wanted to add the level on a cafe, but it only has 2 levels, and I don’t know how to express it.
How do I express if the building has 2 levels?
I hope you understand and reply to me!

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level=0 for the lower part, =1 for the upper part.

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Thank you, Le_Sharkoïste1!

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No problem

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There are 2 relevant keys:

  1. for a building itself
    Key:building:levels - OpenStreetMap Wiki

  2. for a cafe inside a building
    https://wiki.openstreetmap.org/wiki/Key:level if it’s on 2 floors, you can use for multiple values
    Semi-colon value separator - OpenStreetMap Wiki

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