It seems this should be resolved in 2.0.1: https://github.com/Esri/arcgis-python-api/issues/1265.
However trying to append data into ArcGIS Enterprise using the 2.0.1 version, it throws another exception:
Exception Traceback (most recent call last)
in
~\AppData\Local\ESRI\conda\envs\arcgispro-py3-clone\lib\site-packages\arcgis\features\layer.py in append(self, item_id, upload_format, source_table_name, field_mappings, edits, source_info, upsert, skip_updates, use_globalids, update_geometry, append_fields, rollback, skip_inserts, upsert_matching_field, upload_id, return_messages, future)
2376 url = self._url + "/append"
2377 del cparams
-> 2378 res = self._con.post(path=url, postdata=params)
2379 if future:
2380 executor = concurrent.futures.ThreadPoolExecutor(1)
~\AppData\Local\ESRI\conda\envs\arcgispro-py3-clone\lib\site-packages\arcgis\gis_impl_con_connection.py in post(self, path, params, files, **kwargs)
1410 file_name=file_name,
1411 try_json=try_json,
-> 1412 force_bytes=kwargs.pop("force_bytes", False),
1413 )
1414
~\AppData\Local\ESRI\conda\envs\arcgispro-py3-clone\lib\site-packages\arcgis\gis_impl_con_connection.py in _handle_response(self, resp, file_name, out_path, try_json, force_bytes, ignore_error_key)
898 return data
899 errorcode = data["error"]["code"] if "code" in data["error"] else 0
--> 900 self._handle_json_error(data["error"], errorcode)
901 return data
902 else:
~\AppData\Local\ESRI\conda\envs\arcgispro-py3-clone\lib\site-packages\arcgis\gis_impl_con_connection.py in _handle_json_error(self, error, errorcode)
921
922 errormessage = errormessage + "\n(Error Code: " + str(errorcode) + ")"
--> 923 raise Exception(errormessage)
924
925 def post_multipart(
Exception: Error downloading item from Portal.
(Error Code: 500)
Nobody is doing a programmatic data append against ArcGIS Enterprise?
Matej
