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Also, when foreign transactions are general ledger batched and exported, the currency spot rates associated with the GL batched transactions are exported as well. However, since the individual transactions reference currency spot rates that are, in all probability, not the same for all transactions in the GL batch, it is necessary to export the overall currency spot rate. The weighted currency spot rate is a calculation that is performed for each foreign currency GL account that is exported. For a detailed example of calculating weighted currency spot rates see Calculating Weighted Currency Spot Rates.
For more information on GL batching, see Batching Orders, Payments, and Scheduled Transactions.