FTPS-640 — FTP command has been rejected
Named command has been rejected. The number in the last parenthesis is response code returned to the client, the keyword explains the reason of rejection:
TXT_CMDDENY means command is rejected by configuration
TXT_CMDNSUP means command is not supported (see application man page for explanation of reasons)
TXT_CMDRJCT means command is not allowed after connecting to server
TXT_CMDUNKN means command is unknown (e.g. before connecting to server)
TXT_CMDASYN means command is not allowed during data transfer If the message is of A-level, application exits, otherwise proxy rejects request and session continues.