ZOho CRM API : Unable to connect even following afficial documentation step

ZOho CRM API : Unable to connect even following afficial documentation step

Hello,
I'm facing issue when i try to connect to api from Oauth2. Even i post request with correct parameters like id and secret i and client id, have only error message like : invalide code or invalide url redirect url even if it the same like set on developper console. could you please check it why is no t working ?

Thanks,