421 Home directory not available - aborting

I really dont know what to do...

Just trying to connect my domain but I get the report:

220 This is a private system - No anonymous login
USER ggg-ftp
331 User ggg-ftp OK. Password required
PASS (hidden)
421 Home directory not available - aborting

Where do I have to set the directory "Home" ?

Can anybody help? :roll:

thanks
kamran

Server issue, the account don't has a root directory choised. Ask to the server admin.