431, 450, 451, 452 FTP Response Codes
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.
431 FTP Response code
A 431 response code may be sent in response to any command requiring a change in or the negotiation of a security mechanism. It is considered a transient negative reply as the error is considered temporary. In this case, the client is encouraged to restart the FTP transaction and try again.
Example response
431 Need unavailable resource to process security.
Possible commands:
450 FTP Response code
A 450 response code may be sent in response to any command requiring the server to access a local file. It is a transient negative response as the error is considered a temporary one. It is usually sent when the FTP server is unable to gain access to a required file at the time the command is received. In this case, the client is encouraged to restart the FTP transaction and try again.
Example response
450 Requested file action not taken.
Possible commands:
451 FTP Response code
A 451 response code may be sent in response to any command initiating a file transfer . It is a transient negative response, which means the error condition is a temporary one. It is usually sent in response to the server encountering an unexpected local error when processing data it is transferring or receiving. In this case, the client is encouraged to restart the FTP transaction and try again.
Example response
451 Requested action aborted: local error in processing.
Possible commands:
452 FTP Response code
A 426 response code may be sent in response to any command requiring the usage of a data connection. It is considered a transient negative reply as it is considered to be a temporary condition. It is usually sent when the data connection is unexpectedly closed before the completion of a data transfer. In this case, the client is encouraged to restart the FTP transaction and try again.
Example response
452 Requested action not taken; insufficient storage space.
Possible commands:
See also
- 110, 120, 125, 150 FTP response codes
- 202, 211, 212, 213 FTP response codes
- 214, 215, 220, 221 FTP response codes
- 225, 226, 227, 230 FTP response codes
- 232, 234, 250, 253, 257 FTP response codes
- 331, 332, 334, 336, 350 FTP response codes
- 401, 421, 425, 426 FTP response codes
- 500, 501, 502, 503, 504 FTP response codes
- 530, 532, 533, 534, 535, FTP response codes
- 536, 550, 551, 552, 553 FTP response codes
Serv-U Managed File Transfer Server
Let’s talk it over.
Contact our team. Anytime.