DFS2121 USER EXIT REQUESTED DISC LINE `xxx` PTERM `xxx`.

Explanation

The user sign-on exit passed a return code requesting that the terminal be disconnected.

System action

The current session terminates. The next session is initiated ready for operator connection.

Programmer response

Check to determine that the user sign-on exit request is valid; if not valid, take corrective action.

Master terminal operator response: Dial the required terminal.

Problem determination

6, 24