When a "Create User" is attempted using AA's (Advanced Authentication) Admin User Interface, the error "Enter a valid Email Address" is encountered for email addresses for example firstname.lastname@global.topleveldomain, where the TLD name (Top-Level Domain name) is 7 or more characters in length.
This error occurs since out of box AA allows a TLD name of length of minimum 2 to maximum 6 characters DB.
Increase the allowed maximum length of the TLD from out of box 6 characters to 20 characters using the SQL query below:
UPDATE ARUDSCONFIG
SET VALUE = '\b[\p{Alnum}._''%+-]+@(?:[\p{Alnum}-]+\.)+[\p{Alpha}]{2,20}\b'
WHERE PATH = 'ARUDS/Management'
AND NAME = 'EmailRegExpression';