I have one issue on exchange rate . our client do import and export.
So custom department fix the exchange rate at the start of every month which is applicable for the full month.
But in case of receipt or payment in bank we have to consider the current exchange rate
So how we can maintain 2 rate in system.
Import Rate from 01.04.2010-30.04.2010 is 1 USD = 40INR
Payment and receipt rate on 1.04.2010 is 1 USD = 46 INR
Payment and receipt rate on 2.04.2010 is 1 USD = 45 INR and so on.