Is it possible to add features from a JSON file to an existing feature class?

ScotWallace

I am trying to use JSONToFeatures to add features from a JSON file to an existing empty feature class using arcpy and I get the following error:

ERROR 000206: Cannot create FeatureClass '<featureClass'. The workspace is not connected.

out_path = r"C:\\TMP"
gdb_name = "test.gdb"
gdb_full_path = os.path.join(out_path,gdb_name)

arcpy.env.workspace = gdb_full_path
try:
    jsonFile = os.path.join(out_path,'Account.json')
    featureClass = os.path.join(gdb_full_path,'Account')
    arcpy.JSONToFeatures_conversion(jsonFile, featureClass)
except RuntimeError as err:
    print(err)

If I delete the target Account feature class then run this code, it works and Account is written to a new feature class.

Unfortunately, I am having to add these features to an existing feature class as certain input string fields are longer than the ArcGIS default 1024 chars and so I need to have these field widths pre-configured to avoid other errors.

Python 2.7
ArcDesktop 10.8

Luke_Pinner

Works for me. With a very large string field in my GeoJSON, I get a default width of 8000 in the output FGDB featureclass.

 With an Esri JSON file, the field length is explicit, so you can set it to whatever length you need before running JSONToFeatures.

"fields":[{"name":"some_attribute","type":"esriFieldTypeString","alias":"some_attribute","length":15000}]