Document is weak

Document is weak

Hi.
I want to work only sheet api
my problem;

I can't get TOKEN...

Step 1:
req
  1. https://accounts.zoho.com/oauth/v2/auth
  2. ?response_type=code 
  3. &client_id=1000.P4Z0WWOLFDGRT23126TYD3B4JWQ5TE
  4. &scope=ZohoSheet.dataAPI.UPDATE,ZohoSheet.dataAPI.READ
  5. &redirect_uri=http://mydomain.com/zoho_result.php
  6. &state=-5466400890088961855
res
  1. http://mydomain.com/zoho_return.php?state=-5466400890088961855&code=1000.041b7b5928bbab9f0af9fdce95126e73.1fac756c41995bd37728b2ec5c1f2d1d&location=us&accounts-server=https%3A%2F%2Faccounts.zoho.com&

Super... I get my CODE...


Step 2:
req
  1. https://accounts.zoho.com/oauth/v2/token
  2. ?code=1000.041b7b5928bbab9f0af9fdce95126e73.1fac756c41995bd37728b2ec5c1f2d1d
  3. &grant_type=authorization_code
  4. &client_id=1000.P4Z0WWOLFDGRT23126TYD3B4JWQ5TE
  5. &client_secret=83r359de68c312ta5f1f06c3b1319ab98f59fa246d
  6. &redirect_uri=http://mydomain.com/zoho_result.php
  7. &scope=ZohoSheet.dataAPI.UPDATE,ZohoSheet.dataAPI.READ
res
  1. 400 Bad Request
  2. code: 1000.041b7b5928bbab9f0af9fdce95126e73.1fac756c41995bd37728b2ec5c1f2d1d
  3. grant_type: authorization_code
  4. client_id: 1000.P4Z0WWOLFDGRT23126TYD3B4JWQ5TE
  5. client_secret: 83r359de68c312ta5f1f06c3b1319ab98f59fa246d
  6. redirect_uri: http://mydomain.com/zoho_return.php
  7. scope: ZohoSheet.dataAPI.UPDATE,ZohoSheet.dataAPI.READ

I can't my Access Token. I used Online Api Explorer (generate access token)