My design is that whenever an account is created, It calls an 'after insert' trigger that makes a future callout to an external system and sends the account details. If there's an error in the future callout on sending the account information to an external system, I want the user to be notified of the error saying that the account was not successfully created in the external system. I am not sure how to achieve this. Please guide me on this.
Thanks and regards.