For security, the client will not accept server-initiated sessions from servers that have authentication turned off.
The client-server session is not opened, and the schedule is not executed. The scheduler continues to wait for contact by a server that has authentication turned on.
If the client system is supposed to accept scheduled events from the prompting TSM server, either ask the TSM server administrator to turn authentication on, or do not use server-initiated sessions. If the client system is not supposed to accept scheduled events from the prompting server, ask the TSM server administrator to remove the client node name from the schedule on the prompting server.