FTP Return Codes

Below given is a list of FTP return codes with an explanation of what each one them means. These codes come from your FTP Server informing you about the status of your requests.

100 Series: The requested action is being initiated; expect another reply before proceeding with a new command.

• 110 Restart marker reply.
• 120 Service ready in n minutes.
• 125 Data connection already open; transfer starting.
• 150 File status okay; about to open data connection

200 Series: The requested action has been successfully completed.

• 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.

300 Series: The command has been accepted, but the requested action is dormant, pending receipt of further information.

• 331 -User name okay, need password.
• 332 -Need account for login.
• 350 -Requested file action pending further information

400 Series: The command was not accepted and the requested action did not take place, but the error condition is temporary and the action may be requested again.

• 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 Series: The command was not accepted and the requested action did not take place.

• 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.

10000 Series: Winsock Error Series

Winsock means Windows Socket 2. It provides a general-purpose networking application programming interface (API) based on the socket. Winsock provides access to multiple transport protocols allowing you to create applications that support multiple socket types.

Below given is a comprehensive list of all error codes belonging to this series along with a brief description of each one of them.