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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 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.A 450 response code may be sent in response to any command requiring the server to access a local file.
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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 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.