It depends on the product you're using, but I'm going to assume you're using Express Checkout.
- Yes, this is included in IPN data as well as the GetExpressCheckoutDetails and GetTransactiondetails API response.
- Yes, this is included in IPN data as well as the GetExpressCheckoutDetails and GetTransactiondetails API response.
- No, unless you're a very large merchant and have a real business need for this, then it will be available in the GetExpressCheckoutDetails API response.