Foreign currency journals from third party system

  Hi All,

 

We are building an interface from third party system to general ledger and the issue is with regard to foreign currency journals.

Issue is - - -

Foreign currency amount with equivalent functional currency only will be sent in a file with out exchange rate- these are only account wise journal balances, so no exchange rate can be passed on. How to handled the above scenario and pass the journals to GL

Thanks,

krishna