SFTP: Host key verification failed....

Hi all,

I am trying to use SFTP Command via SM69 and I get below error message.

Host key verification failed.

Connection closed

External program terminated with exit code 255

I have used the below details in SM69.

Operating system command

sftp

Parameters for operating system command

-b /local/data/D29/outbound/Z_SFTP_LIST.20100416083831EVDK5YRC.script SFTP-username.........

Thanks,

Subba