Getting error Invalid request on grant type while generating token

[maheshupadhyayn]

JSONObject json = new JSONObject();

json.put("clientId", CLIENT_ID);

json.put("grant_type", "authorization_code");

json.put("redirect_uri", REDIRECT_URI);

json.put("code", "auth code");

json.put("code_verifier", "verifier code");

Error on highlighted line, i am getting below error.

{"success":false,"errors":[{"errorType":"invalid_request","message":"Missing 'grant_type' parameter value. Visit https://dev.fitbit.com/docs/oauth2 for more information on the Fitbit Web API authorization process."}]}

[maheshupadhyayn]

Anyone can help?

[maheshupadhyayn]

@JohnFitbit can you please help. I will share complete code to you if you want

[maheshupadhyayn]

Can someone help on this?

[Gondwana]

(Moved to Web API forum.)

[Gordon-C]

Hi @maheshupadhyayn 

What programming language are you using?  These body parameters should be a single string separated by the & symbol, for example

grant_type=authorization_code&code=<authorization_code>&redirect_uri=https%3A%2F%2Fexample.com%2Fcallback&code_verifier=<code_verifier_value>

Can you confirm this is being performed by your code?