You can easily generate the API AUTH TOKEN for zoho to use their CRM api by just hitting the url in your browser and you will get your API AUTH TOKEN.
https://accounts.zoho.com/apiauthtoken/nb/create?SCOPE=ZohoCRM/crmapi&EMAIL_ID=[Username/EmailID]&PASSWORD=[Password]&DISPLAY_NAME=[ApplicationName]
Just put your Email id and password and put any Application name there. You will then have your access token.
