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Google Apps Script OAuth1.0a library returns xero_unknown_error in Public Application

Started by Jordan Rhea -   in API Authentication

I am building a public application and I am getting the error:

Error starting OAuth flow: oauth_problem=xero_unknown_error&oauth_problem_advice=could%20not%20generate%20a%20request%20token

I dove into the library itself to see where this error was being generated but it is only the request endpoint so I am sure I have some of the configuration wrong. Currently this is what I have:


Can anyone help me identify what I am missing? When I compare to the documentation it seems like this is all I need, but that is obviously not the case. I am able to get the same consumerkey/secret working with Postman, but not through apps script.

Thanks for any help!