For outbound messages, do the following:
In the FTP BC WSDL document, scroll to the input message definition under Bindings (named ftp:message or ftp:transfer, by default).
Select ftp:message or ftp:transfer.
The Properties panel displays the properties for the message.
Do one of the following:
For ftp:message, modify the messageName property to use a unique pattern.
Use either %u to assign a unique UUID number to each output file, or %seq_name for persisted sequence number creation.
For example, output%u.txt.
For ftp:transfer, modify the sendTo property to use a unique pattern.
Use the same patterns as described above.
Do not use %d in the file name because files might be overwritten.
Save and close the WSDL file.
To define a directory where recovery logs, malformed messages, and so on are stored, set the ftp:address/@baseLocation WSDL attribute to the full path.