Fatal host error occurred
An error occurred while trying to execute a 3270 script. The host session is disabled and the script is aborted. The 3270 controller will attempt to recover the session later.
Check the cause of the problem. If it occurs only when a particular script is executing, check that the script is correct. This error can be caused by attempting invalid operations on a particular 3270 screen, or an invalid host response. The error parameters should indicate the reason for the failure and also give the name of the failing session. If the same session continues to report these errors check the session status at the host and verify its availability.
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Log, System Monitor