Managing exchange rates in QuickBooks Online (QBO) depends on whether the difference is categorized as a gain or a loss, J.
Initially, you have to determine whether an exchange rate change led to a gain or a loss.
Once done, you can create a journal entry to correct the discrepancy due to the fluctuation of exchange rates. It's advisable to consult an accountant for accurate bookkeeping.
Given that rates are subject to change, you can also consider implementing a custom rates feature so you can stay current with the most recent foreign exchange rates in your entry.
Here are some articles you can check to learn more about how exchange rates work in QuickBooks: