Go to Accounting / Make General Journal Entry. Reverse the incorrect General Journal by making a new entry with the opposite amount (income instead of expense, or vice versa). The memo should identify the specific entry being corrected by its date or transaction number, and give a reason for the correction. Once that reversing entry is completed, click New Entry. Then re-enter the original General Journal with the correct information. Use the memo to connect the re-entry with both previous General Journals via date or transaction numbers. At your next Bank Reconciliation, mark off both the original and the reversing entry.
You can also correct by entering a single correcting entry, if you can clearly identify the amount and direction (income/expense) of the correction.
Reverse the incorrect General Journal by making a new entry with the opposite amount (income instead of expense, or vice versa).