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Sean Kelleher avatar image
Sean Kelleher asked Phong Vu commented

Critical: Changed my production app to use JWT and now getting OAU-251 error

I just changed my existing production app to use JWT and it's not working and I can't change back my auth type to user name. My production app is now down and I can't switch back to the prior auth mode:

Getting this error:: "errorCode" : "OAU-251", "message" : "Unauthorized for this grant type"


I tested all of this on a separate sandbox account successfully and then switched our existing live app to use JWT and now it doesn't work.

authentication
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Phong Vu avatar image Phong Vu ♦♦ commented ·

What is your app client id?

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Developer sandbox tools

Using the RingCentral Phone for Desktop, you can dial or receive test calls, send and receive test SMS or Fax messages in your sandbox environment.

Download RingCentral Phone for Desktop:

Tip: switch to the "sandbox mode" before logging in the app:

  • On MacOS: press "fn + command + f2" keys
  • On Windows: press "Ctrl + F2" keys