How to find which Serv-u user has deleted files from a directory If multiple user have access to that same directory?

Hi All,

I am a Windows System Administrator. I am using Serv-U FTP server in my environment and Recently I have come across a situation where some important data was deleted from a serv-u directory by a Serv-u user but I am unable to figure out which user has deleted it as multiple users have access to this same directory. Is there any logging done by Serv-u Application in windows so that I can find out how that file was deleted.