I am trying to delete some features from a feature service using an ArcGIS REST API. This documentation shows the output, but I am trying to work out the input. I want to do this via code, rather than via the web interface.

I have tried these JSON parameters: {'objectids': [4, 5, 6]} and {'deleteResults': [{'objectId': 4, 'f': 'json'}]} but they don't work.

Any ideas?

Ideally I would be deleting the features via Python. Can you do it without the API? I can post and query the feature service without accessing the 'ArcGIS API for Python' (e.g. using requests and urllib).

This is a sample form.

  • Something like this seems to work: {'objectids': [{8, 802, 803}]} Sep 19, 2023 at 6:36
  • It would surprise me if this format really works, it isn't even valid json
    – Berend
    Sep 19, 2023 at 7:54
  • It is a version of something that I used for adding features. It sort of works, it deletes the second and third features, but not the first. I could definitely be improved. Sep 19, 2023 at 22:35

1 Answer 1


The format is just a comma separated list of objectids, no JSON.

The page you linked to has an example:

The object IDs of the layer or table to be deleted.

Syntax: objectIds=<objectId1>, <objectId2>

Example: objectIds=37, 462

So you need to make a POST request to: https://example.com/arcgis/rest/services/MyService/0/deleteFeatures, with objectIds=37,462 in the request body

The easiest way to check the format of such requests is to use the html interface of the service. Open https://example.com/arcgis/rest/services/MyService/0?f=html in a browser, then click on Delete Features, enter some ID's: 1,2,3,4 and use the F12 Developer Tools to see the actual request

  • Thanks. I will give it a go a bit later. Sep 19, 2023 at 22:35
  • I couldn't work out where in the Developer Tools to see the format of the request, but I edited the JSON posted based on your advice. Sep 20, 2023 at 1:35
  • 1
    It's on the Network tab
    – Berend
    Sep 20, 2023 at 5:29

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