To delete duplicate transactions in QuickBooks desktop, you can follow a few simple steps. Finding the duplicate transactions must come first. You can accomplish this by running a report and sorting data by date or transaction type, such as the Transaction Detail by Account report.

You have a few alternatives after locating the duplicate transactions. You can just delete the duplicates if they were created recently and haven't been resolved. To do this, locate the duplicate transaction in the transaction list, right-click it, and choose "Delete." Make sure you're removing the right transaction before you confirm the deletion with QuickBooks.

In some cases, you may encounter duplicate transactions that have different details or amounts. In such instances, you may need to merge the transactions manually. To do this, open both transactions, compare their details, and make the necessary adjustments to create a single accurate transaction. Once you've merged the transactions, you can delete or void the duplicates as mentioned earlier.

Remember, before making any changes to your transactions, it's crucial to create a backup of your QuickBooks company file. This ensures that you have a restore point in case any issues arise during the process. Removing duplicate transactions not only keeps your financial records accurate but also helps maintain the integrity of your accounting data in QuickBooks Desktop.