“error”: “unsupported_grant_type” uber rest api

Question

I am using Uber Rest Api and trying to get access token:

Step 1:

Calling the get web API - https://login.uber.com/oauth/v1.2/authorize?client_id=gdSzxhaqFwjXly338goebrVCh_A7ND8b&response_type=code

Step 2:

URL: https://login.uber.com/oauth/v2/token

Request Body:

{
  "client_secret": "xxxxxxxxxxxxxxxxxxxx",
  "client_id": "gdSzxhaqFwjXly33",
  "grant_type": "client_credentials",
  "redirect_uri": "abc",
  "code": "EBvazkPeZXbszs4MufjxA0poKUZuur"
}

and getting the response : "error": "unsupported_grant_type"

Please help me to fix the issue.

Thanks Suresh Patel

Answer 1

First you should double check if you set the correct redirect url in the dashboard - needs to be the same as one on authorization url. Second your request to 'https://login.uber.com/oauth/v2/authorize' seems to contain invalid version. Please follow the steps of the authentication guide.

Briefly, you need to:

• Send user to authorize url. It starts by redirecting the user to the authorize endpoint: https://login.uber.com/oauth/v2/authorize?client_id=YOUR_CLIENT_ID&response_type=code&redirect_uri=YOUR_REDIRECT_URI .You can add scopes as well (check 'scope' parameter on authentication guide)

• Receive the redirect with an authorization code. After the user approves the scopes the user will be redirected to the redirect_uri with an auth code that you can post to the /v2/token endpoint to receive an access token.

• Make a POST call to: 'https://login.uber.com/oauth/v2/token'
• Store access and refresh token for future use

Answer 2

Try making your scope public.
To do that, add:

"scope: "public"

in your param