piebro/osm-data huggingface dataset:
user_5359 (2018-01-23 19:13:00+00:00): Hallo OF0, theoretisch ja. Aber -ohne das Luftbild betrachtet zu haben - kommen mir a) die Schulen in der Gegend komisch vor (ist aber nicht das Problem von rhizomatiker) und b) die Halbüberlappung von Schule (links sieht noch man Schule, rechts ist unter KMZ AK frei Landschaft) hat bei mir Alarmglocken läuten lassen (bzgl Korrektheit). Da biete ich einen Neuanfänger eher die simplen Methoden an.

Praktisch werden building-parts aber für Aufbauten, die auf Gebäudeteil aufsitzen (siehe https://wiki.openstreetmap.org/wiki/DE:Key:building:part und https://wiki.openstreetmap.org/wiki/DE:Simple_3D_Buildings, genutzt, um ein "einfaches" 3D Modell der Karte zu zeichnen. Die Anführungszeichen beziehen sich übrigens darauf, dass die Ergebnisse sich durchaus sehen lassen können und nicht simple Klötzchen Landschaften abbilden.
RicoElectrico (2018-01-23 11:24:27+00:00): Hej, musiała zajść jakaś pomyłka. To nie jest park, a kawałek trawy.

https://goo.gl/maps/VZ1iwhYQZ782

Trzeba uważać przy rysowaniu ze zdjęć lotniczych ;)

Poprawiam to.
abakus_uploader (2018-01-23 23:33:01+00:00): (Wiadomość automatyczna)
Cześć!
Otrzymujesz ten komentarz, ponieważ dodałeś lub zmodyfikowałeś adres, który jest niepełny lub błędny.
Adres powinien zawierać minimum trzy znaczniki: addr:city=[nazwa_miejscowosci] + addr:street=[nazwa_ulicy] + addr:housenumber=[numer_porządkowy].
Wyjątkiem są miejscowości bez nazwanych ulic - wtedy stosujemy znaczniki: addr:place=[nazwa_miejscowosci] + addr:housenumber=[numer_porządkowy].
Bez poprawnego oznaczenia adresów, nie będą one brane pod uwagę przez wyszukiwarki, dlatego warto je dostosować do ww. schematu (w zależności od sytuacji).
Więcej informacji na forum: https://forum.openstreetmap.org/viewtopic.php?pid=646897#p646897 - tam również proszę zadawać ewentualne pytania.
Pozdrawiamy!
Myazyk (2018-02-04 22:48:25+00:00): Там немає бювету! Шо за нісенітниці Ви позначаєте?
abakus_uploader (2018-01-23 23:33:03+00:00): (Wiadomość automatyczna)
Cześć!
Otrzymujesz ten komentarz, ponieważ dodałeś lub zmodyfikowałeś adres, który jest niepełny lub błędny.
Adres powinien zawierać minimum trzy znaczniki: addr:city=[nazwa_miejscowosci] + addr:street=[nazwa_ulicy] + addr:housenumber=[numer_porządkowy].
Wyjątkiem są miejscowości bez nazwanych ulic - wtedy stosujemy znaczniki: addr:place=[nazwa_miejscowosci] + addr:housenumber=[numer_porządkowy].
Bez poprawnego oznaczenia adresów, nie będą one brane pod uwagę przez wyszukiwarki, dlatego warto je dostosować do ww. schematu (w zależności od sytuacji).
Więcej informacji na forum: https://forum.openstreetmap.org/viewtopic.php?pid=646897#p646897 - tam również proszę zadawać ewentualne pytania.
Pozdrawiamy!
Digne (2018-01-24 18:19:43+00:00): Hello jeroenm,

I noticed feedback was requested. 

I think the tagging checks out. My only remark is that I'd advise against connecting the area to the residential roads. While there is no real harm todoing it, connecting it doesn't really serve a purpose either.
jeroenm (2018-01-24 18:37:19+00:00): Hi Digne, thanks for your feedback! I'll keep your advice in mind for sure!
gurglypipe (2018-01-23 12:18:03+00:00): Where’s Sea View street?
rogerjames99 (2018-01-23 13:47:38+00:00): These cottages are actually not on Back Lane but are aligned to the track leading north. I think this originally the driveway to a large property called Sea View. That property is now a small holding without a postal address but named as Sea View on large scale OS mapping. The official postal addresses are 1,2 and 3 Sea View. Back Lane does not have any postal addresses associated with it here or at the Carnforth end. I should probably mark the track in to make this clear. The track does have a very old name, but putting that in would probably be even more confusing.
gurglypipe (2018-01-23 13:53:38+00:00): I see. If the properties’ postal addresses are Sea View, then your tagging is correct. How about adding old_name=Sea View to the track?
2maxic (2018-08-27 06:00:31+00:00): Вы абсолютно уверены в том, что улица Механошина от Елизарова до Медведева не является односторонней? Как там организовано движение в таком случае?
andor133 (2018-08-28 13:30:39+00:00): да уверен на 100 процентов
andor133 (2018-08-28 13:33:31+00:00): обычное двухсторонние движение
2maxic (2018-08-30 06:46:35+00:00): Уже разобрался. Участок перестроили. Спасибо.
gileri (2018-01-23 19:41:23+00:00): Bonjour,

Les pistes cyclables n'existent plus ou sont temporairement inaccessibles ?
ryra6453 (2018-01-23 20:31:49+00:00): Bonjour,
Non il n'y a plus de pistes cyclables.
Travaux du tram.
Je  tiendrais à jour le quartier . Je passe ici 2 fois par jour à Vélo.
Peu être nous verrons nous sur le salon Primevère sur le stand OSM ou La ville a vélo
gileri (2018-02-19 21:27:46+00:00): OK. Si les travaux sont pas trop long (je passe pas trop par là), je pense qu'il serait intéressant de mettre une note OSM.org.

Et sinon merci pour "l'invitation" :)
pitscheplatsch (2018-01-26 18:24:21+00:00): Hi azizchaibou, welcome to OSM. May I know the reason behind using many "unknown" and undocumented tags in this changeset? Thanks.

More information about the mapped objects and its tags can be found here: http://overpass-api.de/achavi/?changeset=55678252
majid1359 (2018-01-23 09:39:32+00:00): تغییرات اعمال شود
dgitto (2018-01-25 06:23:35+00:00): Hi. EPPR is the icao code of the airport. Do not tag it on the runway in OSM.
dgitto (2018-01-25 06:25:54+00:00): Anyway the keys "kod icao" and "rwy" are never used in osm. See the wiki for runways
obache (2018-01-24 05:10:41+00:00): 歩いて鳥居と随身門を通り抜ける参道と、それとは別にその狭いところを避けて交差しながら神社前まで車で行ける道を記述していたはずですが、後者が消されています。いったい何のエラーを修正したのですか？
4004 (2018-01-23 22:32:51+00:00): название повесили, когда отрисовали в 2016 вроде, сам там тогда не был, поэтому оставил
Sagit_BY (2018-01-24 07:07:23+00:00): там была просто промзона, в которой построили новую более широкую дорогу и начали открывать новые производства у этой дороги, адреса которых тоже относились к аульской. Но Аульская просто ближайшая и данный проезд был безымянный, не было решений о присвоении ему названия. А позже ему сразу присвоили имя Дворская
Constable (2018-01-23 17:11:20+00:00): Hi there, given that you're editing objects in Italy, would you be so kind to use at least English changeset comments?
thanks!
Constable (2018-02-17 15:05:00+00:00): no reply uh?! you're part of a community, you're supposed to answer other mappers...
j1scad (2018-02-20 00:30:48+00:00): You have no other problems, what?
Too much time...
Constable (2018-02-20 09:15:05+00:00): Hi there, seems to me like you didn't learn the lesson and you're still not showing respect to other mappers. You already got suspended because you nonsense/generic changeset comments, I really don't get why you keep acting this way.
I'm going to ask you again to please use proper changeset comments, if possible in English when you edit outside of your country.
Thank you
user_5359 (2018-01-23 17:17:22+00:00): Welcome to OSM! Please notice: the minimum keys for an address is addr:street and addr:housenumber! Can you add the value for the street name, please?
majid1359 (2018-01-23 10:02:24+00:00): تغییرات بانک صادران ایران از مپس .مس اضافه شود
majid1359 (2018-01-23 10:03:23+00:00): تغییرات انجام شود
Hjart (2018-01-23 10:37:55+00:00): Jeg har omklassificeret denne her fra sti til trappe
wrp (2018-01-23 11:22:31+00:00): Fint
majid1359 (2018-01-23 10:05:44+00:00): تغییرات نقشه بندرانزلی در آپدیت بعدی مجیک ارث اعمال شود
majid1359 (2018-01-23 10:06:56+00:00): تغییرات انجام شود آپدیت Magic earth
mavl (2018-01-27 15:55:40+00:00): This changeset has been reverted fully or in part by changeset 55804218 where the changeset comment is: The changesets are reverted [DWG has the request to revert changesets. Reason: poor mapping, useless changes, deleting, damage].
freebeer (2018-08-23 22:07:23+00:00): This changeset has been reverted fully or in part by changeset 61934591 where the changeset comment is: finally restore building deleted and replaced by a spammy node seven months ago
mavl (2018-01-27 15:47:06+00:00): This changeset has been reverted fully or in part by changeset 55804218 where the changeset comment is: The changesets are reverted [DWG has the request to revert changesets. Reason: poor mapping, useless changes, deleting, damage].
mavl (2018-01-27 15:58:53+00:00): This changeset has been reverted fully or in part by changeset 55804218 where the changeset comment is: The changesets are reverted [DWG has the request to revert changesets. Reason: poor mapping, useless changes, deleting, damage].
mavl (2018-01-27 15:53:31+00:00): This changeset has been reverted fully or in part by changeset 55804218 where the changeset comment is: The changesets are reverted [DWG has the request to revert changesets. Reason: poor mapping, useless changes, deleting, damage].
mavl (2018-01-27 15:52:26+00:00): This changeset has been reverted fully or in part by changeset 55804218 where the changeset comment is: The changesets are reverted [DWG has the request to revert changesets. Reason: poor mapping, useless changes, deleting, damage].
mavl (2018-01-27 15:59:54+00:00): This changeset has been reverted fully or in part by changeset 55804218 where the changeset comment is: The changesets are reverted [DWG has the request to revert changesets. Reason: poor mapping, useless changes, deleting, damage].
mavl (2018-01-27 15:46:23+00:00): This changeset has been reverted fully or in part by changeset 55804218 where the changeset comment is: The changesets are reverted [DWG has the request to revert changesets. Reason: poor mapping, useless changes, deleting, damage].
mavl (2018-01-23 17:23:45+00:00): Здравствуйте. В действительности вы не добавили СТО. Ни один навигатор его не найдёт. Вы просто обозначили торговую территорию с адресом и названием "СТО". СТО должны обозначаться тегом shop=car_repair.  
[https://wiki.openstreetmap.org/wiki/RU:%D0%9E%D0%B1%D1%8A%D0%B5%D0%BA%D1%82%D1%8B_%D0%BA%D0%B0%D1%80%D1%82%D1%8B]  
  
Также нужно помнить, что "СТО" это не название, а обычно вывеска, на которой указан вид объекта.
mavl (2018-01-27 15:54:06+00:00): This changeset has been reverted fully or in part by changeset 55804218 where the changeset comment is: The changesets are reverted [DWG has the request to revert changesets. Reason: poor mapping, useless changes, deleting, damage].
mavl (2018-01-23 17:27:09+00:00): Здравствуйте. Насколько помню это место, светофор указан в неправильной позиции. В этом месте стоит пешеходный светофор и он не регулирует выезд из этого проезда.
viloan (2018-01-23 10:34:14+00:00): Bem-vindo(a) ao OpenStreetMap e parabéns pela sua primeira edição! :-)

Se você está mapeando por causa do Pokémon, dê uma olhada em https://blog.openstreetmap.org/2017/12/01/dicas-para-novos-mapeadores-pokemon-go/?lang=pt-pt

Também temos um portal brasileiro sobre o OpenStreetMap, com várias informações úteis em https://wiki.openstreetmap.org/wiki/Brasil

Enquanto você está se acostumando com o OpenStreetMap, é recomendado que sempre pergunte aos usuários mais experientes antes de remover ou modificar objetos do mapa, especialmente aqueles que são aparentemente "estranhos" ou "fora do lugar".

Além disso, pedimos que não copie dados de mapas proprietários (como nomes de ruas do Google Maps, por exemplo) e que mapeie apenas o que existe na realidade.

Se tiver qualquer tipo de dúvida você pode entrar em contato com a comunidade brasileira através de algum dos canais disponíveis em https://wiki.openstreetmap.org/wiki/Pt:Contact
O canal "Comunidade" do Telegram costuma ser o mais movimentado.

Abraço e boa diversão com suas edições!
eggie (2018-01-23 11:48:09+00:00): Welkom bij OSM per PB verstuurd
http://wiki.openstreetmap.org/wiki/Welkom_op_OSM
viloan (2018-01-23 10:36:23+00:00): Bem-vindo(a) ao OpenStreetMap e parabéns pela sua primeira edição! :-)

Se você está mapeando por causa do Pokémon, dê uma olhada em https://blog.openstreetmap.org/2017/12/01/dicas-para-novos-mapeadores-pokemon-go/?lang=pt-pt

Também temos um portal brasileiro sobre o OpenStreetMap, com várias informações úteis em https://wiki.openstreetmap.org/wiki/Brasil

Enquanto você está se acostumando com o OpenStreetMap, é recomendado que sempre pergunte aos usuários mais experientes antes de remover ou modificar objetos do mapa, especialmente aqueles que são aparentemente "estranhos" ou "fora do lugar".

Além disso, pedimos que não copie dados de mapas proprietários (como nomes de ruas do Google Maps, por exemplo) e que mapeie apenas o que existe na realidade.

Se tiver qualquer tipo de dúvida você pode entrar em contato com a comunidade brasileira através de algum dos canais disponíveis em https://wiki.openstreetmap.org/wiki/Pt:Contact
O canal "Comunidade" do Telegram costuma ser o mais movimentado.

Abraço e boa diversão com suas edições!
mavl (2018-01-27 16:00:42+00:00): This changeset has been reverted fully or in part by changeset 55804218 where the changeset comment is: The changesets are reverted [DWG has the request to revert changesets. Reason: poor mapping, useless changes, deleting, damage].
mavl (2018-01-27 16:00:15+00:00): This changeset has been reverted fully or in part by changeset 55804218 where the changeset comment is: The changesets are reverted [DWG has the request to revert changesets. Reason: poor mapping, useless changes, deleting, damage].
mavl (2018-01-27 15:53:12+00:00): This changeset has been reverted fully or in part by changeset 55804218 where the changeset comment is: The changesets are reverted [DWG has the request to revert changesets. Reason: poor mapping, useless changes, deleting, damage].
mavl (2018-01-27 15:52:48+00:00): This changeset has been reverted fully or in part by changeset 55804218 where the changeset comment is: The changesets are reverted [DWG has the request to revert changesets. Reason: poor mapping, useless changes, deleting, damage].
mavl (2018-01-27 15:46:41+00:00): This changeset has been reverted fully or in part by changeset 55804218 where the changeset comment is: The changesets are reverted [DWG has the request to revert changesets. Reason: poor mapping, useless changes, deleting, damage].
mavl (2018-01-27 15:55:04+00:00): This changeset has been reverted fully or in part by changeset 55804218 where the changeset comment is: The changesets are reverted [DWG has the request to revert changesets. Reason: poor mapping, useless changes, deleting, damage].
Constable (2018-01-23 20:46:26+00:00): hi there, watch out, you deleted a building and someone already noticed it
https://nrenner.github.io/achavi/?changeset=55679916
https://www.openstreetmap.org/note/1276903

Was that done by mistake?
thanks
Constable (2018-01-24 07:38:29+00:00): I've just restored the building
elmoneto (2018-01-24 13:19:17+00:00): Correction: January 23 instead of January 27
mavl (2018-01-27 15:59:41+00:00): This changeset has been reverted fully or in part by changeset 55804218 where the changeset comment is: The changesets are reverted [DWG has the request to revert changesets. Reason: poor mapping, useless changes, deleting, damage].
mueschel (2018-01-24 09:58:24+00:00): Hi,
OSM is not a quiz app.
Information like this is rather useless because it doesn't follow established tagging standards.
"Types of vehicles that you handle? = Private vehicles Heavy commercial vehicles Public service vehicles"

Please read the corresponding pages in the Wiki to find out what common tags are.
https://wiki.openstreetmap.org

Jan
SomeoneElse_Revert (2018-03-05 22:47:33+00:00): This changeset has been reverted fully or in part by changeset 56917896 where the changeset comment is: Reverting some Pokemon-inspired 'parks' near Gosport - will try and re-add back any new mapping (benches etc.)
R0bst3r (2018-01-23 13:54:03+00:00): Hallo Ravrol,
die Änderungen der keys von phone, webseite etc zu contact:* erscheint mir sehr unnötig, wenn auch nicht falsch. 
Am besten zeigt sich das im Verhältnis von website zu contact:website, siehe https://taginfo.openstreetmap.org/search?q=website. Wieso sich also die Mühe geben?
Viele Grüße
highflyer74 (2018-01-24 13:40:56+00:00): @R0bst3r: pauschal würde ich Dir Recht geben. Ich persönlich bin allerdings auch Fan des contact:* Schemas und ich glaube, dass Ravrol sich hier auch etwas dabei gedacht hat. Im contact:* Schema gibt es Dinge wie contact:facebook=* und contact:mobile=*, die man so gut erfassen kann und die auch z.B. in Osmand ausgewertet werden. Da (zumindest meiner Meinung nach) die beiden Schemen möglichst nicht gemischt verwendet werden sollten, um Bearbeitungsfehler zu vermeiden, macht eine Umstellung hier schon Sinn. Gruss aus dem Norden!
elmoneto (2018-01-24 13:18:50+00:00): Correction: January 23 instead of January 27
mavl (2018-01-27 16:02:38+00:00): This changeset has been reverted fully or in part by changeset 55804218 where the changeset comment is: The changesets are reverted [DWG has the request to revert changesets. Reason: poor mapping, useless changes, deleting, damage].
mavl (2018-01-27 15:49:23+00:00): This changeset has been reverted fully or in part by changeset 55804218 where the changeset comment is: The changesets are reverted [DWG has the request to revert changesets. Reason: poor mapping, useless changes, deleting, damage].
user_5359 (2018-01-23 17:14:44+00:00): Welcome to OSM! Please notice: the minimum keys for an address is addr:street and addr:housenumber! Can you add the value for the house number, please?
An the Name "Corner Of San Carlos St And Fifth Ave" isn't a street name it is a description of a crossing
Glassman (2018-01-23 18:19:38+00:00): Hello!
            Thank you very much for your contributions to OpenStreetMap!
            I reviewed your changeset on OSMCha and found some errors or elements
            that could be mapped in a better way. Feel free to message me
            to know more about it or visit http://learnosm.org/ to get started.
            #REVIEWED_BAD #OSMCHA
            Published using OSMCha: https://osmcha.mapbox.com/changesets/55680095
mavl (2018-01-27 15:52:07+00:00): This changeset has been reverted fully or in part by changeset 55804218 where the changeset comment is: The changesets are reverted [DWG has the request to revert changesets. Reason: poor mapping, useless changes, deleting, damage].
mavl (2018-01-27 15:52:25+00:00): This changeset has been reverted fully or in part by changeset 55804218 where the changeset comment is: The changesets are reverted [DWG has the request to revert changesets. Reason: poor mapping, useless changes, deleting, damage].
mavl (2018-01-27 15:53:55+00:00): This changeset has been reverted fully or in part by changeset 55804218 where the changeset comment is: The changesets are reverted [DWG has the request to revert changesets. Reason: poor mapping, useless changes, deleting, damage].
SomeoneElse_Revert (2018-03-05 22:47:37+00:00): This changeset has been reverted fully or in part by changeset 56917896 where the changeset comment is: Reverting some Pokemon-inspired 'parks' near Gosport - will try and re-add back any new mapping (benches etc.)
mavl (2018-01-27 16:01:28+00:00): This changeset has been reverted fully or in part by changeset 55804218 where the changeset comment is: The changesets are reverted [DWG has the request to revert changesets. Reason: poor mapping, useless changes, deleting, damage].
mavl (2018-01-27 15:59:24+00:00): This changeset has been reverted fully or in part by changeset 55804218 where the changeset comment is: The changesets are reverted [DWG has the request to revert changesets. Reason: poor mapping, useless changes, deleting, damage].
mavl (2018-01-27 15:54:23+00:00): This changeset has been reverted fully or in part by changeset 55804218 where the changeset comment is: The changesets are reverted [DWG has the request to revert changesets. Reason: poor mapping, useless changes, deleting, damage].
glglgl (2018-02-02 10:45:35+00:00): This change made relation 154495 be not closed any longer. Was this intended?

Che change a changé relation 154495 alors elle n'est fermée. C'était volontaire?
Raphael A (2018-02-02 13:18:06+00:00): Oui c'était volontaire : les communes de Réaux et St Maurice de Taveronle ont fusionné en 2017 pour devenir Réaux sur Trefle.

Yes,it wa intended : Réaux and St Maurice de Tavernole have been merged in 2017 becomming Réaux sur Trèfle
glglgl (2018-02-02 13:27:47+00:00): Thank you for the information. But this alone is not a reason for a non-closed admin relation.

The normal way to do this would be to have a new relation with admin_level=8 for the new, merged community and to put the old relations down to a nother admin_level (9 or 10).

As far as I can tell, this was exactly what was done in changeset https://www.openstreetmap.org/changeset/36303028.

So I don't think the "old" boundary between the villages should be removed, just "degraded" to not being a boundary between communities, but to community districts, see also https://wiki.openstreetmap.org/wiki/Tag:boundary%3Dadministrative.
mavl (2018-01-27 15:53:28+00:00): This changeset has been reverted fully or in part by changeset 55804218 where the changeset comment is: The changesets are reverted [DWG has the request to revert changesets. Reason: poor mapping, useless changes, deleting, damage].
mavl (2018-01-27 15:47:42+00:00): This changeset has been reverted fully or in part by changeset 55804218 where the changeset comment is: The changesets are reverted [DWG has the request to revert changesets. Reason: poor mapping, useless changes, deleting, damage].
mapper999 (2018-02-11 12:37:17+00:00): Hallo wegavision,
bitte beachte, dass es sidewalk=separate und nicht "separat" heißt. Dein JOSM hat sich das wohl falsch gemerkt. Ein Großteil von https://overpass-turbo.eu/s/w5K scheint von dir zu stammen.
Viele Grüße
mavl (2018-01-27 16:01:34+00:00): This changeset has been reverted fully or in part by changeset 55804218 where the changeset comment is: The changesets are reverted [DWG has the request to revert changesets. Reason: poor mapping, useless changes, deleting, damage].
viloan (2018-01-23 11:11:30+00:00): Bem-vindo(a) ao OpenStreetMap e parabéns pela sua primeira edição! :-)

Se você está mapeando por causa do Pokémon, dê uma olhada em https://blog.openstreetmap.org/2017/12/01/dicas-para-novos-mapeadores-pokemon-go/?lang=pt-pt

Também temos um portal brasileiro sobre o OpenStreetMap, com várias informações úteis em https://wiki.openstreetmap.org/wiki/Brasil

Enquanto você está se acostumando com o OpenStreetMap, é recomendado que sempre pergunte aos usuários mais experientes antes de remover ou modificar objetos do mapa, especialmente aqueles que são aparentemente "estranhos" ou "fora do lugar".

Além disso, pedimos que não copie dados de mapas proprietários (como nomes de ruas do Google Maps, por exemplo) e que mapeie apenas o que existe na realidade.

Se tiver qualquer tipo de dúvida você pode entrar em contato com a comunidade brasileira através de algum dos canais disponíveis em https://wiki.openstreetmap.org/wiki/Pt:Contact
O canal "Comunidade" do Telegram costuma ser o mais movimentado.

Abraço e boa diversão com suas edições!
mavl (2018-01-27 15:50:12+00:00): This changeset has been reverted fully or in part by changeset 55804218 where the changeset comment is: The changesets are reverted [DWG has the request to revert changesets. Reason: poor mapping, useless changes, deleting, damage].
mavl (2018-01-27 15:48:52+00:00): This changeset has been reverted fully or in part by changeset 55804218 where the changeset comment is: The changesets are reverted [DWG has the request to revert changesets. Reason: poor mapping, useless changes, deleting, damage].
mavl (2018-01-27 15:53:13+00:00): This changeset has been reverted fully or in part by changeset 55804218 where the changeset comment is: The changesets are reverted [DWG has the request to revert changesets. Reason: poor mapping, useless changes, deleting, damage].
mavl (2018-01-27 15:57:02+00:00): This changeset has been reverted fully or in part by changeset 55804218 where the changeset comment is: The changesets are reverted [DWG has the request to revert changesets. Reason: poor mapping, useless changes, deleting, damage].