Not sure what I'm missing. 2015 Adv PU2. Trying to make customer email address a required field. I go to Advanced Field setting, select email address. It says that Email is Required by default and cannot be changed. I add it anyway but it's not working when I add or edit a customer. Only way I found to make it Required is to put a validation of some sort. But what do you put as Valaidation for email address? Without scripting, how do you make email a required field?