I have no direct knowledge but: SSI could be an acronym for "Società Speleologica Italiana". In Italy we have a national registry and many regional registries (with different codes)
https://speleo.it/catastogrotte/wish

cave:ref:it:SSI=* these codes are not SSI but are regional codes of Veneto (FSV "Federazione Speleologica Veneta")
cave:ref:it:CSL="2006" should be cave:ref:it:SSI="LO2006"

these nodes seem like simple tests

Hi user_5359, thanks for checking.
I have modified many caves in my region and followed this wiki:
osm.wiki/Cave#Cave:ref_and_variants
Probably the correct form is with "IT",
as soon as possible, update all data with uppercase characters, thank you

Hi! I'm working on the caves in my region, thank you for checking. I followed this scheme: osm.wiki/Cave#Cave:ref_and_variants
FST = "Federazione Speleologica Toscana"

per la tua segnalazione, non potrebbe essere utilizzato "amenity=social_centre" ?

I'm sorry for the change, I had to ask for information. In the whole world there were only 16 entities, the key had appeared on a quality control portal; documentation should be written to explain this key.
payment:*=*

Hi dmich9, what does the tag mean: "python = scripts/main.py" ? Can you check your latest changesets?

Hello, welcome to OSM
before starting it is important to read the documentation:
osm.wiki/Tags
shop=*

what is this tag? "Bosque = Bosque"
I recommend checking
https://taginfo.openstreetmap.org/

Before starting it is important to read the documentation:
shop=*

What's this?
please read the documentation:
osm.wiki/Tags

What's this ??

Hi Urban Connect
what is it ?

the keys have been corrected, an example node: https://osm.mapki.com/history/node/7147577079
Thank you

Hi Kento Kei, maybe there was some problem with way/1245981789, can you check?
Thank you for your contribution

What's this ??

Good morning stasiu512,
you probably added some wrong tags (bicykle), could you check?
osm.wiki/Key%3Abicycle
thanks for collaboration

Good morning stasiu512,
you probably added some wrong tags (bicykle), could you check?
osm.wiki/Key%3Abicycle
thanks for collaboration

Good morning Rachealayeni,
many tags you entered are badly written (buiiding), could you check?
thanks for collaboration

Good morning mountainvalleytreeservices,
many tags you entered are badly written, could you check?
please read: osm.wiki/Any_tags_you_like
thanks for collaboration

Good morning happybeats,
many tags you entered are badly written, could you check?
thanks for collaboration