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550 Can't check for file existence

Problem

When attempting to upload a file to a remote FTP server, a 550 error code is encountered

SIZE file
550 Can't check for file existence
550 Requested action not taken

Cause

The SIZE command is sent by the FTP client for two reasons :

  • The SIZE command is sent in an attempt to determine if a file with the same name exists on the remote server.
  • The SIZE command is sent in an attempt to get the size of the remote file.

The server responds with a 550 code indicating that the file does not already exist on the server.

Solution

In this case the 550 code returned by the remote FTP server is for information purposes only and can be ignored.

Keywords
size, file existence, 550

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