Hi and welcome to OSM!
I've noticed this changeset because of the unusual tag highway="Ngô Sĩ Liên, KDC Metro"
I assume that "Ngô Sĩ Liên, KDC Metro" is the name of a residential road, so you should use
highway=residential + name=Ngô Sĩ Liên, KDC Metro
See also highway=*
Hope this helps, happy mapping!

Hi!
What did you try to map with this way?
way/543090675
Normally the tag highway=traffic_signal is used for a node on a highway=*.

Moin und willkommen bei OSM!
Du hast Dich als OSM Neuling mit indoor Mapping ja gleich an ein ziemlich schwieriges Thema rangewagt ;-)
Ich kenne mich mit dem Thema nicht aus, aber highway=staiway ist seltsam.
way/543042483
Meintest Du room=stairs?
way/543061358
hat room=stairways ,wahrscheinlich auch besser room=stairs.
Auch indoor="area=room" sieht falsch aus:
way/541039967
In welcher App schaust Du Dir die Daten an?

Hi and welcome to OSM!
You used the tag highway=crossing for a way here. The tag is only meant for nodes shared by a major road and a minor way (footway / cycleway).
So, if there is a crossing (no bridge or tunnel), please make sure that the minor way and the major are connected and tag the shared node with highway=crossing and additional tags that describe the crossing. If the minor way is a footway, use highway=footway + footway=crossing, else highway=cycleway + cycleway=crossing. Hope this helps?

Hi!
Why did you add the tag highway=* to this church?

OK, did you also understand that highway=private is very unusual?

Please add surface=* as well, as the meaning of surface:grade=0 is only clear when the surface is known.

Hi!
Please review: You changed a highway=living_street to highway=living street here. way/323692418
I suggest to use something like was:highway=living_street instead, as your tag looks like a simple typo.

Hmm, not sure what you changed but way/305486812
still has the same tags.

Hi!
I changed typo highway=Path to path here:
changeset/54091396

Hi and welcome to OSM!
I've noticed this changeset because of the unusual tags like highway=Hẻm 479
used here:
way/542690408
I assume that "Hẻm 479" is the name of the road and
In this case you should use name=Hẻm 479
The tag key highway gives the type of road, in this case probably highway=residential. See also highway=*
If you want to map access rules see access=*
but this is rather complicated for a beginner.
Please correct the data and continue.
Happy mapping!

Hi!
Please review way way/542829538
The tag highway=mini_roundabout is for nodes, not for circular ways.
The connected ways in the south have no tags.

What tags did you use? See
way/406674820/history
Was it wrong: I think yes, the tags are not useful for a way, but they may be correct for the node node/263203387
Feel free to fix it if you remember what it was, if not, maybe add a note that this junction needs survey.

Changed it to service now.

I meant this node
node/263203387
I am not a local, I just stumbled over the wrong tag on a way, Anyway, a traffic_light is not that important ;-)

Hi!
Why is the road still tagged as highway=4wd_only ?

OK, I've deleted the way. What about adding the tags to the shared node ?

OK. The 2nd one is not yet fixed.

Hi!
You added highway=traffc_signals to a way with railway=tram here. I assume you wanted to change only one node of this way?
way/390457206

Hi!
You created a very short way here with tagging that normally is used for a node. Was that intended?