Can I delete a duplicate check in the system?

Hi there, @valjgraham.

I'm here to help you delete your duplicate checks.

If this is a duplicate entry, let's remove the duplicate transactions from your register. 

Here's how:

1. Go to the Banking menu.
2. Select the Banking tab.
3. Choose the account where the transactions are recorded.
4. Pick the Reviewed tab.
5. Search for the duplicate transactions.
6. Mark the duplicate ones.
7. Click on Undo. 

However, if the duplicate check is from your bank feed you can exclude the transaction.  You can follow these steps below: 

1. Go to the Banking or Transactions menu.
2. Click the Banking tab.
3. Select the appropriate bank account.
4. Click the For review tab
5. Put a check mark inside the box beside the Date column.
6. Select Exclude to delete the transactions. 

You can also see this article for more details: Exclude a bank transaction you downloaded into QuickBooks Online.

When everything is in place, you might want to utilize these resources for future guidance. These links can walk you through the steps in ensuring your tracking your transactions accurately:

• Categorize and match online bank transactions in QuickBooks Online
• Reconcile an account in QuickBooks Online

Drop your comment below if you have other concerns about managing your clients' bank transactions. I'm always here ready to back you up!