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Nominatim geocoder returns osm_id as a location attribute. See this example
<result place_id="1620612" osm_type="node" osm_id="452010817">
135, Pilkington Avenue, Wylde Green, City of Birmingham, West Midlands (county), B72, United Kingdom
</result>
Is it possible to get place ID with ESRI geocoder? Like esri_id or place_id?
I make the following request to geocoder http://geocode.arcgis.com/arcgis/rest/services/World/GeocodeServer/find?f=pjson&outFields=%2A&text=Big+Ben
In the OSM data model, a single ID makes sense because the data is all being resolved down to a single resource. In the case of the Esri geocoder, there is no single source of truth that would naturally lend itself to unique IDs — but between the scores, location, and address, you should be able to get pretty good correspondence between the two where it exists.
