The client entered the REIN command to reinitialize an FTP session back to the state of a new connection that has not logged in as user ID. In order to reset the user ID to a new user ID or to a state of no user ID, the server must change the user ID associated with the server to a superuser user ID. The server was unable to return to the superuser environment.
error is the LE run-time library error message for the failure. See the z/OS Language Environment Runtime Messages for a complete description of error.
The FTP session ends.
Try the connection and the failing command again. If the problem persists, contact the system programmer.
Determine the cause of the error using the information contained in the message and correct the problem.