When there is a change in conversion rates or an error has been detected in them, the memoized transactions need to be corrected. Follow the given steps to correct them: 1. Click or press the Control  + T keys together to open the list window. 2. Now, enter the transaction and correct the information. 3. Press Control + M keys to rememorize and then press replace transactions from the pop window that opened. 4. Now, clear the transaction window and then press Control + T to go to the memorized list. 5. Check the settings of the memorized transactions and make the changes if required. 6. Now, click Ok.