The invoices and received payments report has duplicate invoices for some customers. A statement for cust. does not show dups. Why isn't report correct?

Hi, flightdeckputtin.

Thank you for posting your concern here in the Community. I'm here to you fix the duplicate invoices and received payment reports in QuickBooks Online (QBO).

We can perform some basic troubleshooting steps to rectify the issue. It could be that the accumulated temporary internet files are the reason why we're seeing duplicate invoices in your Invoice and Received Payment report.

First, let's access your QuickBooks account in a private/incognito browsing window. Doing this process will help identify if it's a browser-related issue since this mode doesn't save cache and cookies. Feel free to use the shortcut keys below:
 

• Press Ctrl + Shift + N (Google Chrome).
• Ctrl + Shift + P (Firefox or Microsoft Edge).
• Control + Option + P (Safari).
   

Once you're in, let's go to the Sales menu then access your customers' profile again. If the duplicates are now gone, we'll have to go back to your regular browser and then clear the cache to delete the stored junk files.

You can also create a customer statement in QuickBooks Online. This will list all the transactions with the settlement amount.

I added some links you can check. These will list all available reports in QuickBooks Online and how to customize them:
 

• Customize reports in QuickBooks Online
• Reports included in your QuickBooks Online subscription

Comment down below if you have other questions about invoices and received payment reports. We're always here to offer our assistance. Keep safe.