19 April 2021
Hello , With all due respect to the Expert Opinion, I Would like to state that if you mention SAC of Courier in your Bill, then it means that you are providing Courier Service to the Dealer & Courier Service is one Nature of Business of the Dealer. If that is the case then you can mentioned SAC of Courier
But your business is only of Automobiles , Then mentioning SAC of Courier Services will be inappropriate
19 April 2021
Thanks for the correction. I interpreted the query to be pertaining to courier charges on inward supply. You are right. HSN of principal supply would apply in this case.