FTP returncode 250

Hello,

We are having problem while invoking service pub.client.ftp:put service.

Partner is returning 250 as the return code and put service is returning back with ABORT.

After that, put is exiting with null exception.

Can anyone give us any idea, how webMethods handles ftp return code 250? where I can find the list of return codes webemthods supports?

Any other ideas?

Thanks.