Hi Gabriela, the #-sign is in the list of problem characters, see
https://taginfo.openstreetmap.org/reports/characters_in_keys#problem
Also a hint to a company in schools does not make sense. please fix/remove this unusual tag or convert to a "note="#mcasanturce".
Please do not invent new keys before reading the wiki:
osm.wiki/Education_features
Thanks, Alex

Hi, why you added a new unique key "g"= ? kr, Alex

what means "" = "0". KR, Alex

node/243045065 wikipedia �潳¦退您㾬

I think something went wrong with your scripts.
Why chinese wikipedia is added in BY (europe), and also not existing article many times ?
KR, Alex

Hi iWowik,
I saw many problematic wikipedia cahnges by you 2 days ago.
language code missing + not existing article (in any language) !
node/243047271 wikipedia 潳¦耀നD0�ёс
node/243047226wikipedia �潳¦耀ླ

Hi Fränky123, why you are adding tags like "email" = "email" to OSM. These tags have unknown keys (e.g. "email" = ".." would be ok). Also a line/way without other tags would still be useless. If you want (but even this would be unusual) you could add "created_by" = "me".
KR, Alex
(you can answer in german if you prefer)

Hi Griphon, in node/4638292605 you added an empty key "" = "Ferramenta Ceciliano". I fixed this to "name" = ..
KR, Alex

Hi iWowik, could you please fix the not existing wikipedia-link you created? Thx, Alex

Hi NESDD, you introduced a typo in addr;country 80x, but " : " should be used.
Danke, Alex

Hi bekreyev, please fix node 4601575441 = broken tag. Thanks,Alex

sorry wrong comment: fix ele

Hi J., your edit introduced many broken tags "name"=0x7F (unprintable ascii code). please be careful. Thanks, Alex

cahr = char = ASCII = 0x7F

Hi dufekin, you inserted many bad characters into tags during last year.
I saw about 10x inside USA the tag "highway"="%7Fhighway" or "%7Ftertiary" etc. I have no idea how you did it? I fixed most of them now. Many regards, Alex

Hi Someoneelse, please be careful introducing typos like key=";ayer". I fixed to layer. kr, Alex

Hi Ghybu, please use tah wikidate=Q1234, not wikipedia=Q1234. Thanks, Alexander

I have fixed it now. I also have fixed some others some days ago. Alex

Hi Jens. please do not create tags like:
"-" = <empty>

could you please fix the bad new key='source' including " ' ". all other keys in OSM dont use this style. It could also break some scripts.

Hi Beeers, please do not enter empty tags ""="". Thanks, Alex