Define the actions for the interface in the path
SAP Application Interface Framework-->Interface Development-->Define Actions
Assign the function module in Assign Function. This function module that will carry the main logic for incoming proxy data processing.
Define the fields to restore
The function module signature is as follows
Within the FM call your proxy class for the main processing , sample code as stated below.
Continue to Part 5
https://blogs.sap.com/?p=676971&preview=true&preview_id=676971
Go back to Part 3
https://blogs.sap.com/wp-admin/post.php?post=676052&action=edit