Ftp error codes and it's description

What is Ftp? Short for File Transfer Protocol, the protocol for exchanging files over the Internet. FTP works in the same way as HTTP for transferring Web pages from a server to a user's browser and SMTP for transferring electronic mail across the Internet in that, like these technologies, FTP uses the Internet's TCP/IP protocols to enable data transfer.

FTP is most commonly used to download a file from a server using the Internet or to upload a file to a server (e.g., uploading a Web page file to a server).

Below are the lists and descriptions of common Ftp error if you aren’t familiar.

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.