Hi there, @CrystalB1974.

Let me help you remove duplicates and share info on what scenarios this happens.

When you enter these transactions accidentally, you'll want to void or delete them in QuickBooks. I'll guide you on how:

1. Go to Sales, then select All sales.
2. Find the invoice that you want to void or delete.
3. In the Action column, select the dropdown ▼, then select Void or Delete.

Duplicates also occur when you add downloaded transactions that you already manually entered into the program. To avoid this from happening, you'll need to find a match for these transactions. Feel free to follow the steps below:

1. Go to Banking.
2. Select your bank account.
3. In the For Review tab, click one transaction.
4. Select Find Match.
5. In the Match transactions page, choose the transaction that matches and click Save.

If these duplicates are already accepted from your bank feeds, you have the option to exclude them in the Online Banking menu.

Here's how:

1. Go to Banking.
2. In the Reviewed tab, find the duplicate deposits.
3. Click Undo in the Action Column.
4. In the For Review tab, select the duplicate transactions.
5. In the Excluded tab, check the boxes for these duplicates.
6. Click on Batch actions. Then, select Delete.

For more details about managing your bank feeds, check out this link: Assign, categorize, edit, and add your downloaded banking transactions.

After performing the mentioned steps, if the same issue occurs with your invoice payments, I recommend contacting the QuickBooks Online (QBO) Care Team to help you navigate to the root cause of the issue.

Let me also add an article for more information about reconciling an account: How to Reconcile an Account in QuickBooks Online?

If there's anything else that I can help you with managing your invoice payments, please let me know in the comment section below.