ABSTRACT INTERFACE

Hi,

I'm doing file to file scenario with BPM's ... in ABSTRACT INTEFACE wich message type we need to select.. Whether Sender Message type or Receiver message type.. which one we need to select..

and if i have <b>two sender files..</b> and <b>one reciver file</b>.. then how many message mappings and how many inteface mappings i need to create... in the BPM scenario

thansk

Babu