set a field as unique using arcgis api for python

[MartinPeak]

Can you set a field as unique using the arcgis rest api for python?

MartinPeak_0-1716263353621.png

[MobiusSnake · Accepted solution]

You can, enabling unique values means adding an index with a unique constraint to the field.  To do this in the API you'll want to call the FeatureLayerManager's add_to_definition() function, passing in something like this:

{"indexes":[
  {"fields":"MyField",
   "isUnique":True,
   "description":"For uniqueness"}
]}

[MartinPeak]

thanks that works - this is the code:

layer = published_item.layers[0]

layer.manager.add_to_definition({

    "indexes": [

        {

            "fields": "some_id",

            "isUnique": True,

            "description": "For uniqueness"

        }

    ]

})