FTP 202 Command Superfluous vs 553 File Name Not Allowed
FTP 202 (Command Superfluous) is a 2xx Positive Completion response, while 553 (File Name Not Allowed) is a 5xx Permanent Negative response. 202 indicates that the command is not implemented but is recognized as superfluous. The server acknowledges the command but it has no effect. In contrast, 553 means that requested action not taken. File name not allowed. The file or directory name violates the server's naming rules or filesystem restrictions.
Descripción
The command is not implemented but is recognized as superfluous. The server acknowledges the command but it has no effect.
Cuándo lo verás
When you send a command the server recognizes but considers unnecessary, such as ALLO on a server that does not require pre-allocation.
Cómo solucionarlo
No fix needed — the server is telling you the command is not necessary. You can safely ignore this response and continue.
Descripción
Requested action not taken. File name not allowed. The file or directory name violates the server's naming rules or filesystem restrictions.
Cuándo lo verás
When you try to create or rename a file with characters the server's filesystem does not allow, such as special characters or reserved names.
Cómo solucionarlo
Rename the file to use only allowed characters. Avoid special characters like ?, *, |, <, >, and leading/trailing spaces or dots.
Diferencias clave
202 is a 2xx Positive Completion response, while 553 is a 5xx Permanent Negative response.
FTP 202: The command is not implemented but is recognized as superfluous. The server acknowledges the command but it has no effect.
FTP 553: Requested action not taken. File name not allowed. The file or directory name violates the server's naming rules or filesystem restrictions.
You encounter 202 when when you send a command the server recognizes but considers unnecessary, such as ALLO on a server that does not require pre-allocation.
You encounter 553 when when you try to create or rename a file with characters the server's filesystem does not allow, such as special characters or reserved names.
Cuándo usar cada uno
For 202 (Command Superfluous): No fix needed — the server is telling you the command is not necessary. You can safely ignore this response and continue. For 553 (File Name Not Allowed): Rename the file to use only allowed characters. Avoid special characters like ?, *, |, <, >, and leading/trailing spaces or dots.