> "deals with it," This basically loses data integrity if it's wrong though. You might want to do that with human input if it's helpful to the user - ie user

> "deals with it," This basically loses data integrity if it's wrong though. You might want to do that with human input if it's helpful to the user - ie user enters a phone number and you strip dashes etc. But if it's machine to machine, it should just follow the spec.