Hi there, pattinenterprises. To remove your duplicate invoices, you can go to Sales in your QuickBooks Online (QBO).
Here's how:
- Go to Sales, then click Invoices.
- Locate the invoice that are duplicate.
- Under Actions, click the dropdown button and select Delete.

Before deleting the invoice, ensure to double-check the information so that your records remain accurate.
Feel free to check out this article for guidance in sending automatic invoice for your customers.
Should you need any assistance managing your QuickBooks transactions, we're here to help any time.