FTP return status Annotation

FTP Status Code Description
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 "= ".
Restart flag response. In this case, the information is accurate and does not need to be specially processed. You can see that in the mark yyyy = Mmm, YYYY is the user process data stream mark, mmmm is the corresponding mark on the server (note the space between the mark and equal sign)
120 service ready in NNN minutes.
Service available in NNN time
125 data connection already open; transfer starting.
The data connection is enabled and data transmission starts.
150 File status okay; about to open data connection.
The file status is correct. The data connection is being opened.
200 command okay.
Command Execution ends normally.
202 command not implemented, superfluous at this site.
The command is not executed. This site does not support this command.
211 system status, or system help reply.
System status or system help information response.
212 directory status.
Directory status information.
213 File status.
File status information.
214 help message. on how to use the server or the meaning of a particle non-standard command. This reply is useful only to the human user.
Help information. About how to use this server or special non-standard commands. This reply is only useful to people.
215 name system type. Where name is an official system name from the list in the assigned numbers document.
Name system type.
220 Service ready for new user.
The service of the newly connected user is ready
221 Service closing control connection.
Close Control connection
225 data connection open; no transfer in progress.
The data connection is enabled, and no data is being transferred.
226 closing data connection. Requested file action successful (for example, file transfer or file abort ).
Closing data connection. The request file action ends successfully (for example, file transfer or termination)
227 entering passive mode (H1, H2, H3, H4, P1, P2 ).
Enter passive mode
230 user logged in, proceed. logged out if appropriate.
The user has logged in. You can log out without any need.
250 requested file action okay, completed.
The requested file X is successfully completed.
257 "pathname" created.
Path created
331 user name Okay, need password.
The user name already exists. Enter the password.
332 need account for login.
Account to be logged in
350 requested file action pending further information
More information is required for the X of the requested file.
421 service not available, closing control connection. This may be a reply to any command if the service knows it must shut down.
The service is unavailable and the control connection is closed. This may be a response to any command, if the service thinks it must be disabled
425 can't open data connection.
An error occurred while enabling the data connection.
426 Connection closed; Transfer aborted.
The connection is closed and the transfer is aborted.
450 requested file action not taken.
X of the requested file is not executed
451 requested action aborted. Local error in processing.
The requested x is aborted. A local error occurs during processing.
452 requested action not taken. Insufficient storage space in system. File unavailable (e.g., file busy ).
The request X is not executed. Insufficient system storage space. File unavailable
500 syntax error, command unrecognized. This may include errors such as command line too long.
Syntax error, unrecognized command. This may be because the command line is too long.
501 syntax error in parameters or arguments.
Syntax Error Caused by parameter error
502 command not implemented.
Command not executed
503 bad sequence of commands.
Command Order error.
504 command not implemented for that parameter.
The command is not executed due to a parameter error.
530 not logged in.
No Logon
532 need account for storing files.
Account information is required to store files
550 requested action not taken. File unavailable (e.g., file not found, no access ).
The request for X is not executed and the file is unavailable.
551 requested action aborted. Page type unknown.
Request X for suspension. The page type is unknown.
552 requested file action aborted. exceeded Storage Allocation (for current directory or dataset ).
Terminates X of the request file. Exceeded Storage Allocation
553 requested action not taken. File Name Not Allowed
Request X is not executed. File Name Not Allowed
This error is similar to the HTTP protocol, which is roughly:
2-success
3-permission issues
4-file Problems
Starting with 5 -- server problems