Hi Trinath,
No additional configuration is required. However specify following in co.code pymt method,
select with a tick
Foreign Vendor allowed,
Foreign currency allowed and
Customer Vendor bank abroad allowed.
What chris mentioned was the main key. A particular USD invoice must to be paid in INR, through the payment currency which can be edited in the original invoice. If you don't see payment currency field, edit vendor/posting key FSG. That's it.
Thanks Chris once again.
Regards,
Sam