This code corresponds to the user code entered in the login box (identified as login code in the user record). The entered value is displayed as it has been entered in the login box (it can be in upper case or lower case letters, even if the login code of the user record was entered in upper case letters).
It should be noted that, in the case of a Web connection via direct link that brings the user back to a login box, the displayed code is ASK_(the final user code being identified in the User column).