The server received an RETR command to retrieve an ASA tape data set when the server was configured with TAPEREADSTREAM=TRUE.
The RETR command is rejected.
If your client is a z/OS® Communications Server FTP client, issue a SITE NOTAPEREADSTREAM subcommand to change the value for the current session. If your client is not a z/OS Communications Server FTP client, issue a QUOTE SITE NOTAPEREADSTREAM subcommand to change the value for the current session. For more information about the SIte subcommand, see z/OS Communications Server: IP User's Guide and Commands.
To change the TAPEREADSTREAM value permanently, change the TAPEREADSTREAM statement in FTP.DATA. For more information about the TAPEREADSTREAM statement, see z/OS Communications Server: IP Configuration Reference.