Hi, 

I have followed your API Guide in  https://www.zoho.com/crm/help/api/v2/#refreshing-tokens to generate tokens and refresh token. For the first time I was able to generate access token and refresh token similar to what is stated in  https://www.zoho.com/crm/help/api/v2/#generate-access . However, when I refrresh the token as stated  https://www.zoho.com/crm/help/api/v2/#refreshing-tokens , I am only getting access token and not refresh token. So after one hour if I want to get another new token, how can I do so?