How to avoid partial files via FTP from XI to an external server?

Hi all,

I'm working in an interface where XI sends a big file (greater than 1MB) via FTP to the client. The client needs an empty file to be created once the file has been fully sent from XI, with format <b>.ok</b>, so that their server can trigger their interface to process the file.

They want this procedure to ensure no partial files are processed.

Could someone please help me out on how to do this in XI.

Thank you.

<b>Juan Carlos</b>