Hacktoberfest 2026：メンテナが10月に向けて印を付けた、オープンで初心者向けの issue。 Hacktoberfest の issue を見る

many metropolitan divisions miss the city level in division hierarchy

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@stepps00 がすでに取り組んでいます。

2026年2月5日 から。

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説明

divisions

I found inconsistencies in the division theme for many cities. The data in my examples is taken from 2025-10 release.
I guess this is connected to #235 but I want to point out a potential reason/solution for this bug.

I reverse geocoded a location in the center of Berlin.
I expect to find a division that has Berlin as city.
But in fact the division hierarchy indicates the city name of Berlin would be "Mitte" which is obviously not the case.

                  id = 1a6a8f16-265c-4c99-83dd-7b2d2dc2aabd
             sources = [{'dataset': OpenStreetMap, 'license': ODbL-1.0, 'record_id': r16347@143}]
         cartography = {'prominence': 49, 'min_zoom': NULL, 'max_zoom': NULL, 'sort_key': NULL}
             subtype = locality
               names = {'primary': Mitte, 'common': {de=Mitte, ru=Митте, ja=ミッテ}, 'rules': NULL}
              region = DE-BE
          local_type = {en=locality}
         hierarchies = [[
		 {'division_id': 567d1698-7209-4b94-b7b8-0bc71bde0104, 'subtype': country, 'name': Deutschland}, 
		 {'division_id': 59f212f3-4e73-45d4-aca6-a8c5cb0c2bfd, 'subtype': region, 'name': Berlin}, 
		 {'division_id': 1a6a8f16-265c-4c99-83dd-7b2d2dc2aabd, 'subtype': locality, 'name': Mitte}
		 ]]
  parent_division_id = 59f212f3-4e73-45d4-aca6-a8c5cb0c2bfd
          population = 383360
               theme = divisions
                type = division

I'm aware that Berlin is a independent city, and it's on region level, not on locality level.

But there's more to it:
The divisions theme contains the correct information, but it's not linked with division_area.
And it's not bidirectionally linked with the other divisions you see above.

The fitting locality/city division is the one with id=9187e609-5a2f-4535-85ec-e2b88399eea3

Interesting fact: In this special division, the other divisions are included and the hierarchy is complete:

                  id = 9187e609-5a2f-4535-85ec-e2b88399eea3
             sources = [{'property': , 'dataset': OpenStreetMap, 'license': ODbL-1.0, 'record_id': n240109189@176, 'update_time': 2025-08-23T20:44:40Z, 'confidence': NULL, 'between': NULL}]
         cartography = {'prominence': 93, 'min_zoom': NULL, 'max_zoom': NULL, 'sort_key': NULL}
             subtype = locality
               class = city
               names = {'primary': Berlin}
            wikidata = Q64
              region = DE-BE
          local_type = {en=city}
         hierarchies = [[
		 {'division_id': 567d1698-7209-4b94-b7b8-0bc71bde0104, 'subtype': country, 'name': Deutschland}, 
		 {'division_id': 59f212f3-4e73-45d4-aca6-a8c5cb0c2bfd, 'subtype': region, 'name': Berlin}, 
		 {'division_id': 1a6a8f16-265c-4c99-83dd-7b2d2dc2aabd, 'subtype': locality, 'name': Mitte}, 
		 {'division_id': 9187e609-5a2f-4535-85ec-e2b88399eea3, 'subtype': locality, 'name': Berlin}
		 ]]
  parent_division_id = 1a6a8f16-265c-4c99-83dd-7b2d2dc2aabd
               norms = NULL
          population = 3769962
capital_division_ids = NULL
capital_of_divisions = [{'division_id': 567d1698-7209-4b94-b7b8-0bc71bde0104, 'subtype': country}, 
{'division_id': 59f212f3-4e73-45d4-aca6-a8c5cb0c2bfd, 'subtype': region}]
               theme = divisions
                type = division

So in the end, this is a case where data is inconsistent within division theme.

I guess I can rework the data on my side in order to meet my expectation, but I suggest it's fixed directly in the delivery.

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