The sequence of FTP commands is invalid. (user = aa....aa, client = bb....bb, command = cc....cc)

aa....aa: User name

• If the error occurs before the user logs in: <null>

bb....bb: IP address of the client
cc....cc: FTP command

Description

The sequence of FTP commands is invalid.

(S)

The file or list data transmission processing ends.

(O)

Review and, if necessary, revise the status of the transmitting FTP client.

Also, see the protocol trace to identify the location of the error and then take action.