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unable to text JWT authorization using Postman

Tags: authentication

Nov 21, 2023 at 6:16am • 3 replies • 0 likes

Fax Admin

I am testing 'JWT authorization flow' but getting error
"errorCode": "OAU-250",

"message": "Unsupported grant type"

using : https://platform.devtest.ringcentral.com/restapi/oauth/token

I don't want to use SDK as I will deploy on MS-SQL Server.

3 Answers

Fax Admin answered on Nov 21, 2023 at 9:56am

same for Postman looks like

Fax Admin answered on Nov 21, 2023 at 9:55am

So working Powersell Code to get the access token using JWT is

DO NOT pass 'body' as below

Phong Vu answered on Nov 21, 2023 at 7:10am

Can you double check the grant type of your app to see if it is JWT auth flow? Or let me know the app client id.

Fax Admin on Nov 21, 2023 at 7:17am • 0 likes

tried on Powershell too

App client Id: avDmFoV208obAVOTmKzqMu

Auth flow is JWT only

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