maybe you can just try to remove the mail address from the user master, save it, go back to the menu, start the user master again and enter the email address again.
Sounds weird, but I wouldn't mention it, if I had not already made such experience
maybe you can just try to remove the mail address from the user master, save it, go back to the menu, start the user master again and enter the email address again.
Sounds weird, but I wouldn't mention it, if I had not already made such experience