I have now encountered this same error code. My process reported
“FTP Command close failed, return code: 600 - 221-You have transferred 61330 bytes in 1 files.”
SAG seems to be using this code for some default mechanism. Based on this forum thread, there are different FTP servers being used and yet the only common thread among them is the use of the WM FTP client.
Has SAG reported anything on this code?
#Integration-Server-and-ESB#webMethods#edi