Hi Pramod,
On my first post I said "Through NWA -> Configuration -> Destinations, we defined an RFC destination namedZWD_MODELDATA_DEST (same as JCO) and this destination uses "Current User (Assertion Ticket)" as authentication method." so yes, the authentication method I used to configure the destination is Current User with assertion ticket.
The following image shows the error occurred when I do a ping to the destination:
Best regards,
Gregory.