FTP 200 Command OK vs 501 Syntax Error in Arguments
FTP 200 (Command OK) is a 2xx Positive Completion response, while 501 (Syntax Error in Arguments) is a 5xx Permanent Negative response. 200 indicates that the command has been successfully executed. This is a general acknowledgment that the command was understood and carried out. In contrast, 501 means that syntax error in parameters or arguments. The command was recognized but its arguments are invalid or malformed.
Descripción
The command has been successfully executed. This is a general acknowledgment that the command was understood and carried out.
Cuándo lo verás
After issuing any command that completes successfully, such as TYPE, MODE, or NOOP.
Cómo solucionarlo
No fix needed — the command succeeded. This is the standard positive response for commands that don't return data.
Descripción
Syntax error in parameters or arguments. The command was recognized but its arguments are invalid or malformed.
Cuándo lo verás
When you use a valid command but with wrong parameters, such as an invalid path format or incorrect argument count.
Cómo solucionarlo
Review the command's required argument format. Common issues include missing quotes around paths with spaces or invalid character encoding.
Diferencias clave
200 is a 2xx Positive Completion response, while 501 is a 5xx Permanent Negative response.
FTP 200: The command has been successfully executed. This is a general acknowledgment that the command was understood and carried out.
FTP 501: Syntax error in parameters or arguments. The command was recognized but its arguments are invalid or malformed.
You encounter 200 when after issuing any command that completes successfully, such as TYPE, MODE, or NOOP.
You encounter 501 when when you use a valid command but with wrong parameters, such as an invalid path format or incorrect argument count.
Cuándo usar cada uno
For 200 (Command OK): No fix needed — the command succeeded. This is the standard positive response for commands that don't return data. For 501 (Syntax Error in Arguments): Review the command's required argument format. Common issues include missing quotes around paths with spaces or invalid character encoding.