Hello. Thanks for mapping here.
Unfortunately, many buildings are not aligned to their footprint or incorrect mapped.

About mapping of high buildings. They show a large shadow.
Difficult area to map.
Big building blocks with several stories and courtyards

Check here how high buildings ought to be mapped.

https://docs.google.com/document/d/1z7uDwYm4oNmlexHIhJxGCjPpNhCQAgRia5aEJr_4MwM/edit?usp=sharing

Many tall buildings have a small rooftop building, a superstructure, lift building or something similar on the roof, do not map it as a separate building, just map the roof lines of the complete building and move the whole to the footprint. You can often see it in the shadow.
On this webpage you can see your mapping (east side ) and the modifications I had to made.
Best regards and keep mapping

Hello. Thanks for mapping.
We welcome you as a new mapper.
Difficult area to map here.
Unfortunately, many buildings are not aligned to their footprint or incorrect mapped.
About mapping of high buildings. They show a large shadow.
Difficult area to map.
Big building blocks with several stories and courtyards

Check here how high buildings ought to be mapped.

https://docs.google.com/document/d/1z7uDwYm4oNmlexHIhJxGCjPpNhCQAgRia5aEJr_4MwM/edit?usp=sharing

Many tall buildings have a small building, a superstructure, lift building or something similar on the roof, do not map it as a separate building, just map the roof lines of the complete building.

Best regards and keep mapping

Hello. Thanks for mapping.
Difficult area to map.
Big building blocks with several stories and courtyards
Check here how high buildings ought to be mapped.

https://docs.google.com/document/d/1z7uDwYm4oNmlexHIhJxGCjPpNhCQAgRia5aEJr_4MwM/edit?usp=sharing

Many tall buildings have a small building, a superstructure, lift building or something similar on the roof, do not map it as a separate building, just map the roof lines of the complete building..
The dark objects next to buildings to the west is the shadow the building give. Don't map it as a separate building.

Best regards and keep mapping

HI again.
Please don't forget to square each rectangular building when it is still selected with the Q key.
best regards

Hello. Thanks for mapping here.
Difficult area. Blocks of buildings with several stories.
About mapping of high buildings. They show a large shadow.
Check here how high buildings ought to be mapped.

https://docs.google.com/document/d/1z7uDwYm4oNmlexHIhJxGCjPpNhCQAgRia5aEJr_4MwM/edit?usp=sharing

Many tall buildings have a small building, a superstructure, lift building or something similar on the roof, do not map it as a separate building, just map the roof lines of the complete building.

Best regards and keep mapping

Continue:
So the difficulty is how to identify buildings, with several floors as well and courtyards in-between the buildings.
I adjust your mappings and will show you the results.
The incorrect mappings of other mappers are modified as well.
Check this webpage
https://overpass-api.de/achavi/?changeset=165973999
If you hoover over the mapping, you see who mapped or adjusted it.
I suggest selecting another project with easier to map buildings till you gain more experience.
Best regards

Hello. Thanks for mapping on this project Anna.
I notice you are a new mapper.
As a matter of fact, you start to map on a project where experienced mappers finds trouble how to deal with these buildings. (not your fault. But we are changing it to experienced mappers only)
The imagery is taken from a certain degree, which shows lots of shadows, small and big , indicating the hight of the buildings.

Unfortunately, many buildings are not aligned to their footprint or incorrect mapped.

This task ought to be mapped with the ESRI world imagery as background.

About mapping of high buildings. They show a large shadow.
Check here how high buildings ought to be mapped.

https://docs.google.com/document/d/1z7uDwYm4oNmlexHIhJxGCjPpNhCQAgRia5aEJr_4MwM/edit?usp=sharing

Many tall buildings have a small building, a superstructure, lift building or something similar on the roof, do not map it as a separate building, just map the roof lines of the complete building.

Best regards and keep mapping

Hello, thanks for mapping on this project

This task ought to be mapped with the ESRI world imagery as background.

About mapping of high buildings. They show a large shadow.
Check here how high buildings ought to be mapped.

https://docs.google.com/document/d/1z7uDwYm4oNmlexHIhJxGCjPpNhCQAgRia5aEJr_4MwM/edit?usp=sharing

Many tall buildings have a small building, a superstructure, lift building or something similar on the roof, do not map it as a separate building, just map the roof lines of the complete building.

Best regards and keep mapping

Hello. Thanks for mapping.
Unfortunately, your mappings are very poor and sloppy. Don't you use a mouse to map?
Please map more accurate and square the rectangular buildings with the Q key.

About mapping of high buildings. They show a large shadow.
Check here how high buildings ought to be mapped.
Many high buildings have a kind of

https://docs.google.com/document/d/1z7uDwYm4oNmlexHIhJxGCjPpNhCQAgRia5aEJr_4MwM/edit?usp=sharing

Many tall buildings have a small building, a superstructure, lift building or something similar on the roof, do not map it as a separate building, just map the roof lines of the complete building.
Best regards

Hello. Thanks for mapping.
Your mappings are sometimes rather weird. It is sometimes hard to see how a building looks, with the shadows and multiple levels. Keep in mind that most buildings are rather regular and have squared corners.
Even experienced mappers find these buildings difficult to map.
Best regards and keep mapping.

Hello. Thanks for mapping.
The buildings mapped by you were mapped with Bing Imagery as background,
The instructions mention to use the ESRI imagery.
Quite a number of buildings need to be adjusted, mapped or placed on the correct footprint.
Most buildings have a regular pattern and square. please map accordingly and square the buildings.
Please don't cluster adjacent buildings as well.
Best regards and keep mapping

Hello. Thanks for mapping.
The buildings mapped by you were mapped with Bing Imagery as background,
The instructions mention to use the ESRI imagery.
Quite a number of buildings need to be adjusted, mapped or placed on the correct footprint.
Most buildings have a regular pattern and square. please map accordingly and square the buildings.
Best regards and keep mapping

Hello. Thanks for mapping.
The buildings mapped by you were mapped with Bing Imagery as background,
The instructions mention to use the ESRI imagery.
Quite a number of buildings need to be adjusted, mapped or placed on the correct footprint.
Most buildings have a regular pattern and square. please map accordingly and square the buildings.
Best regards and keep mapping

Hello. Thanks for mapping.
Many buildings were mapped with Bing Imagery as background,
The instructions mention to use the ESRI imagery.
Quite a number of buildings need to be adjusted, mapped or placed on the correct footprint.
Most buildings have a regular pattern and square. please map accordingly and square the buildings.
Best regards and keep mapping

Hello. Thanks for mapping
Many buildings were mapped with Bing Imagery as backgroud,
The instructions mention to use the ESRI imagery.
Quite a number of buildings need to be adjusted, mapped or placed on the correct footprint.
The task is invalidated

Best regards and keep mapping

hello. Thanks for mapping.
Please do not cluster adjacent buildings. Square each rectangular building as well.
Best regards and keep mapping

Hello. Thanks for mapping.
Please read the instructions. Esri imagery ought to be used !

Best regards

Thanks for mapping.
Some remarks.
Esri imagery should be used. Read the instructions please.
Your mappings are very rough. You mapped complete plots as a building, despite they exist of several buildings, courtyards and walls.
Pleas map more accurate next time.
Check this page to see your mappings and the adjustments which I had to make.
https://overpass-api.de/achavi/?changeset=165845855

best regards

Hello. Thanks for mapping
Unfortunately, you used the BING imagery instead of ESRI. (See the instructions !)

Many mapped buildings do not match their ground plan on ESRI and need to be adjusted.
PLease map more accurate as well.
very rough mapped.
Best regards