I'm using Azure AD B2C Local Accounts Sign-in only custom policies(i.e No sign-up). I've the requirement to use email as login-id instead of UPN. I could not find any Microsoft guidelines for changing the custom policies for this requirement.
The only links I can see https://docs.microsoft.com/en-us/azure/active-directory/authentication/howto-authentication-use-email-signin (Microsoft Preview) and https://github.com/azure-ad-b2c/samples/tree/master/policies/username-or-email but its not much helpful interms of what I need to change on local accounts only custom policies to sign-in using alternative login emaill-id. Could someone shed some light on this, please?
