FTP 150 File Status OK vs 504 Parameter Not Implemented
FTP 150 (File Status OK) is a 1xx Positive Preliminary response, while 504 (Parameter Not Implemented) is a 5xx Permanent Negative response. 150 indicates that the file status is okay and the server is about to open the data connection for the transfer. This is the normal precursor to a file transfer. In contrast, 504 means that command not implemented for that parameter. The command is supported but not with the specific parameter value provided.
Beschreibung
The file status is okay and the server is about to open the data connection for the transfer. This is the normal precursor to a file transfer.
Wann Sie es sehen
Right before a file download or upload begins, confirming the file is accessible and the data channel is being opened.
Wie man es behebt
No fix needed — this means the transfer is about to start. If the transfer stalls after this reply, check firewall rules blocking the data connection.
Beschreibung
Command not implemented for that parameter. The command is supported but not with the specific parameter value provided.
Wann Sie es sehen
When you use an unsupported transfer type or mode, such as TYPE E (EBCDIC) on a server that only supports ASCII and binary.
Wie man es behebt
Use a supported parameter value. Check the server documentation or use FEAT to see which parameter options are available.
Wesentliche Unterschiede
150 is a 1xx Positive Preliminary response, while 504 is a 5xx Permanent Negative response.
FTP 150: The file status is okay and the server is about to open the data connection for the transfer. This is the normal precursor to a file transfer.
FTP 504: Command not implemented for that parameter. The command is supported but not with the specific parameter value provided.
You encounter 150 when right before a file download or upload begins, confirming the file is accessible and the data channel is being opened.
You encounter 504 when when you use an unsupported transfer type or mode, such as TYPE E (EBCDIC) on a server that only supports ASCII and binary.
Wann welchen verwenden
For 150 (File Status OK): No fix needed — this means the transfer is about to start. If the transfer stalls after this reply, check firewall rules blocking the data connection. For 504 (Parameter Not Implemented): Use a supported parameter value. Check the server documentation or use FEAT to see which parameter options are available.