Hi , @MonikaS9010  

To create a file listener, one need to follow below steps in the mode of : >Why ?>  How ? > Where ? Creation of service package to hold all the access group and related details to give the access to the service

Second need to create the service file to tell the system how you need to run the file in this we will write activity and parse the file

Then at last we need to create the File listener to tell the system from where we need to pick the file the address of that particular file.  

At last go to Admin studio>Resources>Listener and run the listener , one will get the correct and exact outputs . Thanks | Somil