The FTP server received an invalid sequence from a client. Check the FTP
Sessions workspace and look for other sessions that were ended because of a sequence
error:
((Session End Reason = 4) & (FTP Type = Server))
If the
client always has the same IP address and port, there might be a problem with
the client.
If the server is ending all or most sessions with this
reason code, there might be a problem with the server or the system the server
is running on.
If FTP server activity logging is enabled, the SYSLOGD
file on the server system might contain trace entries related to the failure.
The value displayed for Server Logging Session ID may be used to locate entries
in the SYSLOGD file for the failed session. The trace entries are identified
by message IDs. The documentation for the messages may provide additional
assistance to diagnose the problem. This warning situation is based
on the session end reason code provided when a session ends. By default, this
situation is evaluated every 15 minutes and is not run at startup.
Note: For z/OS v1.8 or higher only.
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