An FTP transfer ended. Unable to open data connection.
Check the FTP Transfers workspace. If several transfers have ended due to network errors:
(Last Reply to Client = 425)
There may be a problem in the network or on the system that the client or server is running on. Contact the network or system administrator and provide the Last Reply to Client Code, the Last Reply to Client Description and the Logging Session ID (if it is available).
For server transfers (Role = Server), if FTP server activity logging is enabled, the SYSLOGD file on the server system may contain trace entries related to the failure. The value displayed for Server Logging Session ID may be used to locate entries in the file for the failed transfer. The trace entries are identified by message IDs.
The documentation for the messages may provide additional assistance to diagnose the problem. Message EZYFS80I is recorded in the log file and displays the reply code and the text provided by the server with more specific information about the error. The IBM z/OS Communications Server IP and SNA Codes manual documents the reply codes, their text, and information about how to recover from the error if possible.
For client transfers (Role = Client), the system log may contain messages EZA2589E or EZZ9830I. These messages may contain additional information about the problem. The documentation for the messages may provide additional assistance to diagnose the problem.
This warning situation is based on the last reply to client provided when a transfer completes. By default, this situation is evaluated every 15 minutes and is not run at startup.