Values.AliasExistsExceptionSourceThis exception is thrown when a user tries to confirm the account with an email address or phone number that has already been supplied as an alias for a different user profile. This exception indicates that an account with this email address or phone already exists in a user pool that you've configured to use email address or phone number as a sign-in alias.
type nonrec t = {message : MessageType.t option;The message that Amazon Cognito sends to the user when the value of an alias attribute is already linked to another user profile.
*)}