Hello, I follow the example of https://github.com/thisvijay/zohodesk_api_samples/blob/on_progress/PHP/ticketDetails.php

I have an error :

{"errorCode": "UNAUTHORIZED", "message": "You are not authenticated to perform this operation."}

I'm using the IDOrg and ZSC Key from the page https://desk.zoho.eu/agent/********/********/setup#setup/developer-space/api/apiauthentication

Which key should I use?

Thanks