ExtractChanges - getting Error 'layerDefs' parameter is invalid

FishMaps — Fri, 15 Nov 2024 19:45:12 GMT

I'm currently trying to access the change log for an AGOL hosted feature layer we have using the ExtractChanges method outlined here. However, upon sending the request, I am receiving an error:

File "..Scratch\main.py", line 20, in <module> changes = flc.extract_changes(layers=l.layers[0], layer_servergen=l_server_gen, return_inserts=True, return_updates=True, return_deletes=True) File "...\lib\site-packages\arcgis\features\layer.py", line 4822, in extract_changes res = self._con.post(url, params) File "...\lib\site-packages\arcgis\gis\_impl\_con\_connection.py", line 1524, in post return self._handle_response( File "...\lib\site-packages\arcgis\gis\_impl\_con\_connection.py", line 1000, in _handle_response self._handle_json_error(data["error"], errorcode) File "...\lib\site-packages\arcgis\gis\_impl\_con\_connection.py", line 1023, in _handle_json_error raise Exception(errormessage) Exception: 'layerDefs' parameter is invalid (Error Code: 400)

Here is the code snippet being ran:

l = gis.content.search("<layerid>")[0] l_object = l.layers[0].container server_gen_obj = l_object.properties.changeTrackingInfo print(server_gen_obj) l_server_gen = [] for i in server_gen_obj["layerServerGens"]: l_server_gen.append({"id": i["id"], "serverGen": i["serverGen"]}) print(l_server_gen) flc = FeatureLayerCollection.fromitem(l) changes = flc.extract_changes(layers=l.layers[0], layer_servergen=l_server_gen, return_inserts=True, return_updates=True, return_deletes=True)

I also receive the same error when trying to submit through the service page:

There are no definition queries on the data, so I'm not sure why the layerDefs parameter is invalid when request is sent

topic ExtractChanges - getting Error 'layerDefs' parameter is invalid in ArcGIS REST APIs and Services Questions

ExtractChanges - getting Error 'layerDefs' parameter is invalid