530: You must first login with USER and PASS.
A command was issued to request a service from the FTP server, but the client was not currently logged in to a valid user ID for the server system. The command entered required the user to be logged in to a valid user ID.
The command is rejected. Control returns to the client for further command processing.
Log on to a valid user ID for the server system using the USER and PASS commands, then reissue the command. See the z/OS Communications Server: IP User's Guide and Commands for more information.
System programmer response