Thank you for the reply. I assume the address information was already known to you then. Is that correct?

In the future, you can (instead) add "survey" when you deliberately visited the address for said information, or "local knowledge" as source when adding such details at a much later date. You can add "of owner" or similar to this if this isn't directly your knowledge.

Also, if you want to do more of such edits, or want to try something different, it is recommended to use one of the mobile editors. See
https://wiki.openstreetmap.org/wiki/Editors#Mobile
(StreetComplete is one of the editors most used for adding addresses; it is a thematic/quest-based application.)
You'll also find the beginners' guide at the top of said page.

Some of the above links can always be found at the top of the OpenStreetMap website under "Communities" and "Help".