Copying data from GAE to local data storage fails - google-app-engine

Question

I have followed all the instructions:
1) I downloaded it like this:
appcfg.py download_data -A s~myApp --url=https://myApp.appspot.com/_ah/remote_api/ --filename=data.csv
Note that according to this solution I have to append s~ to the app name, or I get the error message:google.appengine.api.datastore_errors.BadRequestError: app s~myApp cannot access app myApp's data
2) I have to add remote_api access to my app.yaml
- url: /remote_api
script: google.appengine.ext.remote_api.handler.application
login: admin
3) I have to run the local server and go to http://localhost:8080/remote_api. In there I enter the admin email for local env and set it as administrator.
4) I upload the csv to local data storage:
appcfg.py --url=http://localhost:8080/_ah/remote_api/ --filename=data.csv upload_data src/
Unfortunately it fails now with this error message:
ApplicationError: ApplicationError: 1 app "dev~myApp" cannot access app "myApp"'s data
What am I missing please?

Answer 1

I found the solution myself, you have to specify the dev application name, hope this helps others.
appcfg.py --url=http://localhost:8080/_ah/remote_api/ --filename=data.csv upload_data -A dev~myApp src/