We have setup SFTP from IFS10 to our Transport Administration system. The XML-file is transferred successfully but the response from the TA-system is not supported by IFS. The application message ends up with an error: “Error during file sending 
Caused by: com.jcraft.jsch.SftpException: Operation not supported.”

This causing IFS to keep retrying to send the file, which will cause error in the connection. The TA-system thinks it is spam and we will be loocked out.