osm.org/way/395889438/history has KN = 61:01:0150201

What is the meaning of this unusual key? Is this tag needed?
Or maybe can it be expressed in a more typical way that would be easier to understand?
Or maybe this key can and should be documented as useful tagging schema?

osm.org/way/395889429/history has KN = 61:01:0010501

What is the meaning of this unusual key? Is this tag needed?
Or maybe can it be expressed in a more typical way that would be easier to understand?
Or maybe this key can and should be documented as useful tagging schema?

osm.org/node/4950379415/history

disused:amenity=pharmacy and healthcare=pharmacy are in conflict, one claims that pharmacy existed and another claims it exists
Is this pharmacy existing or not?

osm.org/node/3785189375/history

Is it gate or stile?

Is there really a stile here? If yes, then barrier=stile is missing.
If no then stile= for stile subtype makes little sense.

see osm.wiki/w/index.php?title=Tag:barrier=stile#Stile_types

http://overpass-turbo.eu/s/1c3g finds about 300 other similar issues. See also https://github.com/openstreetmap/id-tagging-schema/pull/1624 proposing to eliminate one of root causes.

osm.org/way/394919910/history has KN = 61:26:0170501

What is the meaning of this unusual key? Is this tag needed?
Or maybe can it be expressed in a more typical way that would be easier to understand?
Or maybe this key can and should be documented as useful tagging schema?

osm.org/node/766739506/history
brand:wikidata=Q1462383 and brand:wikipedia=de:Mayersche Buchhandlung link brand entry that is supposedly not existing anymore

Is this place still existing? If yes, have they changed name/brand?

Or maybe Wikipedia/Wikidata is wrong and this place exists, under this brand and just owner is different?

Maybe just some brand tags are wrong and outdated and were not changed when POI was updated?

osm.org/node/379559952/history
brand:wikidata=Q1462383 and brand:wikipedia=de:Mayersche Buchhandlung link brand entry that is supposedly not existing anymore

Is this place still existing? If yes, have they changed name/brand?

Or maybe Wikipedia/Wikidata is wrong and this place exists, under this brand and just owner is different?

Maybe just some brand tags are wrong and outdated and were not changed when POI was updated?

osm.org/way/394919914/history has KN = 61:26:0141101

What is the meaning of this unusual key? Is this tag needed?
Or maybe can it be expressed in a more typical way that would be easier to understand?
Or maybe this key can and should be documented as useful tagging schema?

droga czy ścieżka idzie tu na wschód

via Zazolc 28.0-beta1

osm.org/way/1312506352

te name:de nie jest już w aktualnym użuciu?

a name:la chyba całkiem do wywalenia?