This application does not exist (app_id=xxx)

Question

I was unable to upload to an AppEngine as appcfg was telling me :

This application does not exist (app_id=u\'xxx\').

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Answer 1

This is really old, so I wouldn't be surprised if this isn't picked up by the poster, but I wanted to ensure that I have a reference for the next time I have the issue.

I had this issue. My problem ended up being that I had not invited the user that I was authenticating as to be a developer on the project. In fact I had just created the user and not even logged on yet.

I logged on to the google infrastructure as the new user, then added the new user as a developer on the application. I was then able to upload the app.