- 110- Restart marker reply. In this case, the text is exact and not left to the particular implementation; it must read: MARK yyyy = mmmm where yyyy is User-process data stream marker, and mmmm server’s equivalent marker (note the spaces between markers and “=”).
- 120- Service ready in nnn minutes.
- 125- Data connection already open; transfer starting.
- 150- File status okay; about to open data connection.
- 200- Command okay.
- 202- Command not implemented, superfluous at this site.
- 211- System status, or system help reply.
- 212- Directory status.
- 213- File status.
- 214- Help message.On how to use the server or the meaning of a particular non-standard command. This reply is useful only to the human user.
- 215- NAME system type. Where NAME is an official system name from the list in the Assigned Numbers document.
- 220- Service ready for new user.
- 221- Service closing control connection.
- 225- Data connection open; no transfer in progress.
- 226- Closing data connection. Requested file action successful (for example, file transfer or file abort).
- 227- Entering Passive Mode (h1,h2,h3,h4,p1,p2).
- 230- User logged in, proceed. Logged out if appropriate.
- 250- Requested file action okay, completed.
- 257- “PATHNAME” created.
- 331- User name okay, need password.
- 332- Need account for login.
- 350- Requested file action pending further information
- 421- Service not available, closing control connection.This may be a reply to any command if the service knows it must shut down.
- 425- Can’t open data connection.
- 426- Connection closed; transfer aborted.
- 450- Requested file action not taken.
- 451- Requested action aborted. Local error in processing.
- 452- Requested action not taken. Insufficient storage space in system. File unavailable (e.g., file busy).
- 500- Syntax error, command unrecognized.This may include errors such as command line too long.
- 501- Syntax error in parameters or arguments.
- 502- Command not implemented.
- 503- Bad sequence of commands.
- 504- Command not implemented for that parameter.
- 530- Not logged in.
- 532- Need account for storing files.
- 550- Requested action not taken. File unavailable (e.g., file not found, no access).
- 551- Requested action aborted. Page type unknown.
- 552- Requested file action aborted. Exceeded storage allocation (for current directory or dataset).
- 553- Requested action not taken. File name not allowed.





