Please follow the below steps to reverse Journal Entries:
Step 2: Click on "Old Journal Entries".
Step 3: Select the date range and click on the "Fetch Report" button if you are not able to see the Journal Entry on-screen which needs to reverse.
Step 4: Decide which entry needs to reverse.
Step 5: Click on the "Delete" button of the respective journal entry row.
Step 6: Respond "OK" to "Are you sure, you want to delete the journal entry?"
Step 7: Journal Entry has been voided.
Note: Now the deleted entry disappeared in the list of journal entries already showing.