Can we customize the username and password labels for administrator Login window?
Login window configuration, May 2015 and newer
It is possible to customize the username and password label for administration login page by editing the applicable message base USERNAME_LBL, PASSWORD_LBL.
The USERNAME_PASSWD_ENTERED_INCOR_ACCT_MSG message base controls the 'incorrect username and password' alert message displayed on the login screen.
For more information on how to customize the brand logo and welcome page, refer to Answer ID 1961: Customize the administration Login window.
Each interface can have a different label since the message base is set only for that interface. All staff members logging into a certain interface will see the label for that interface.