The post-display exit, IKJEFLN2, receives control after the logon panel is displayed to the TSO/E user. This exit receives control when the TSO/E user presses the Enter key after a logon panel has been presented.

You can use exit IKJEFLN2 to validate and modify fields on the logon panel after the user has entered information on the panel. For more information about IKJEFLN2, see Writing a logon post-display exit (IKJEFLN2).