unsupported_grant_type

Vera Ekimenko

Hi

I am trying to test connectivity for my WebSocket API application (what I need https://github.com/Refinitiv-API-Samples/Example.WebSocketAPI.Python.TRNA/blob/master/notebook/mrn_realtime_news_notebook_app.ipynb).

The command I am trying:

curl --data-urlencode "grant_type=password&takeExclusiveSignOnControl=True&scope=trapi&username=GE-myusername&password=mypassword" -X POST -H "Accept: application/json" -H "Content-Type: application/x-www-form-urlencoded" -v https://api.refinitiv.com:443/auth/oauth2/v1/token

The response I have is {"error":"unsupported_grant_type" }.

I appreciate if you can help me to resolve this issue.

Thanks

Vera

wasin.w

Hello @Vera Ekimenko

Could you please try with the following curl command?

curl --location --request POST 'https://api.refinitiv.com/auth/oauth2/v1/token'; \
--header 'Content-Type: application/x-www-form-urlencoded' \
--header 'Authorization: Bearer ' \
--data-urlencode 'username=<Username/Machine ID>' \
--data-urlencode 'password=<Password>' \
--data-urlencode 'grant_type=password' \
--data-urlencode 'scope=trapi' \
--data-urlencode 'takeExclusiveSignOnControl=true' \
--data-urlencode 'client_id=<App Key>'

I noticed that your curl command does not contain the client_id parameter as well.

The Refinitiv Real-Time Optimized (formerly known as ERT in Cloud) uses RDP APIs authentication. I suggest you check the following resources about RDP authentications:

• RDP APIs tutorials: Authorization - All about tokens
• RDP APIs tutorials: Authorization in Python

Alternatively, you may use the Postman collection to verify your RDP/Machine ID credentials.

Vera Ekimenko

Hi Wasin

Thank you for a prompt response. I have generated client_id using this

" target="_blank">https://emea1.apps.cp.thomsonreuters.com/apps/AppkeyGenerator

The Product is 'DEVPORTALUNQUALIFIEDCONTACTS.VERAEKIMENKO' which is not what my organisation is using (TRNA).

When I am trying to post a request from your Postman collection 'Authentication/Get Access Token' with the values set in RDP Env Starter environment (usename, password, client_id generated above) I have an error:

{

"error": "access_denied",

"error_description": "Invalid username or password."

}

How to get the correct client_id?

Thank you

Vera

Vera Ekimenko

Hi Wasin

Update: I have tried your curl command and it works with my client_id . I'll try it with my app and post if I have any issues. Thank you for your help.

Thank you

Vera Ekimenko

wasin.w

Hello @Vera Ekimenko

The Curl and Postman results should be identical with the same credentials. I suggest you check the Postman setting guide in the RDP Postman tutorial.