Please check these nodes. They all got a HOVEDGRUPPE tag that looks like it shouldn't be in OSM.

And: what is the source of this data "Norway Orthophoto" can't be right.

Hi,
please check the buildings you added here - there are many with strange tags like
building_c
building_l
building_m
building_s
capacity_p

Another reminder:

Please check the spelling of the keys you add. I'm fixing spelling mistakes in the keys of Monoglian names almost every day!, e.g. at_name -> alt_name, mn_mong -> mn-Mong etc.

Hi,
you used the new tag "patrimonial" here - what does it mean?

In OSM we have to use a well-defined set of tags to make sure all users and all software can understand them. Please use only those tags that are described in the Wiki or that are available in your editor as presets.

Railway signal tagging is quite complicated (and needs to be). You could ask for some assistance on the forums or just leave a note with the details to be added by someone with experience in that.
I'm pretty sure that this maxspeed is not advisory, so that tag would be wrong. The tag you're looking for might be railway:signal:speed_limit_distant, but I can't say for sure.

Hi,
please check this node:
node/3194949388
"maxspeed:ahead" is not a common tag and there is no road nearby this "traffic_sign" could belong to.

Hallo,
da hast du recht, "sidewalk:right:bicycle:backward" ist irgendwie abhanden gekommen. (Beachte, erst das Fahrzeug, dann die Richtung ist die übliche Reihenfolge).

oneway=-1 ist hier völlig in Ordnung - die englische Version im Wiki drückt das auch nicht so explizit aus. Bei normalen Straßen ist das in der Regel unnnötig und kann durch Drehen des Weges vermieden werden. Aber das hier ist genau so ein Fall wo man es die Sache doch einfacher macht.

Den Sinn der Beschilderung habe ich auch nicht verstanden - ich hatte mir die Bilder bei Mapillary angesehen um das Tagging zu verstehen :) Vor ein paar Jahren scheint er jedenfalls mal in beide Richtungen freigegeben gewesen zu sein.

Thank you for the details! In Germany there are similar signs, but IMO they don't imply that the road has to be used.
The term "transit" seems a bit to generic for this. How about:
- Mark the road to be dedicated to heavy vehicles, e.g. hgv = designated
- destination:hgv = Gryfino
This should describe the fact that this destination is specifically meant for trucks. To be even more exact we could use:
destination:hgv:conditional = Gryfino @ weightrating>10

Hallo,
bitte schaue mal nach den recycling-Tags an diesem Knoten
node/11173418904

Im Wiki sind die üblichen Tags aufgelistet, und nur diese sollten verwendet werden:
amenity=recycling

Hi,
welcome to OSM!
Please check the hundreds of ways you added here - all of them got some strange tags like these:

addr:inclusion=actual = addr:inclusion=actual
addr:interpolation=odd = addr:interpolation=odd
name = impar

Please check the Wiki or other already mapped addresses to see how these tags should look like.
In case you have questions, just ask in the forums!

Right... sorry, didn't look carefully enough.

Hi,
you used the tag "destination:transit" here - this is not used in other places.
way/1187825019
Could you check that? If you have a photo of the sign I can try to help...

Eine definitive Antwort kann ich dir da auch nicht geben. Allerdings muss der operator ja nicht unbedingt der Auftraggeber / Geldgeber sein. Deswegen würde ich die Stadtwerke da als nicht unbedingt falsch ansehen.
Diese Konstrukte können ja unter Umständen noch viel verworrener werden.
Man sollte es nur nach Möglichkeit einheitlich im Stadtgebiet machen.

Welcome to OSM!
You added many tags that are not used in any other place. In OSM we have to use a well defined set of tags to make sure the data can be understood by other mappers and all software. Please check the wiki and the presets in your editor for common tags and use only these.

If you need help, just ask in the forums!

Da ist mir doch glatt das "fire_hydrant:" abhanden gekommen im Kommentar. Danke fürs Korrigieren!

Hallo,
'flow_rate' wird an Hydranten bisher nicht benutzt - schau doch mal bitte nach dem passenden Tag im Wiki.

Hi,
you used the tag "destination:transit" here - this is not used in other places.
way/1187825019
Could you check that? If you have a photo of the sign I can try to help...

Hi,
please check the "parking:side" tags you added. The "side" needs to be replaced by left, right or both.

Hi,
welcome to OSM. It looks like you're trying to add hiking routes - unfortunately the process is more complicated than adding a new way on top of existing streets. Please check the wiki, look at existing routes or contact the local community to learn how.

Hallo,
das Parkhaus hat ein seltsames 'ags' Tag bekommen - kannst du das korrigieren?