RFC 2FILE ERROR

Hi All,

when i am activating Integration bulider for the RFC2FILE scenario according to the link mention below

https://www.sdn.sap.com/irj/sdn/weblogs?blog=/pub/wlg/1926. [original link is broken] [original link is broken] [original link is broken]

but these are the errors which occured for me,so can u plz sort these for me,these the errors

Receive step to start process missing.

Step does not use any correlations.

Message to be sent SENDER and synchronous interface FileDetails_Sync_AI are not of the same type.

Response RECIVER and synchronous interface FileDetails_Sync_AI are not of the same type.