Hi Masa,
In this scenario, Vendor wants to know the status of PO..nothing more..
Vendor wants to know whether it is Delivered or Invoice is done or Payment is done.
He wont be having any other access.
I have resolved this issue.
Used Un Trusted RFC destination using RFCUSER. And in DPC_EXT, retrieved Gateway UserID and used the same for further processing.
so closing the thread
Thank you.
Syam