xml validation in File to RFC Sync Scenario with Validation fails message

Hi All,

We are using PI 7.4 (Dual Stack) the Requirement is File to RFC Sync Scenario(File <---> RFC).and need to do XML validation against XSD Schema. if any Validations fails Response message should send back to sender.RequestResponseBean standard module is using for File to RFC Sync scenario but how to send the response message to sender if any validation fails. adapter level XML validation is not helpful for this requirement. please help out me how to achieve the requirement with graphical mapping.

Thanks in advance.