Unable to generate token

[NJ2]

I tried to generate the token using "https://api.dropboxapi.com/oauth2/token" post method API. I am getting the response as 

"error_description": "No auth function available for given request",
"error": "invalid_request"

 I have including the parameters client_id as app_key and client_secret as app_secret. What have I missed? Why am I getting this error? 

[Greg-DB]

It sounds like you're not formatting this request properly. For reference, you can find the documentation for it here:

https://www.dropbox.com/developers/documentation/http/documentation#oauth2-token

There's also a sample in this old blog post that may be helpful:

https://blogs.dropbox.com/developers/2013/07/using-oauth-2-0-with-the-core-api/

(It was written for the now-retired API v1, but the OAuth part works the same way.)

If you're still having trouble, please share your code so we can take a look.