Hi there, brittanynaturalf.
Thanks for checking in with us. I'm here to help you fix duplicate invoice numbers in QuickBooks Online (QBO).
If it's a duplicate invoice, you'll need to delete it. However, if it's only the invoice number that has duplicate, you have the option to edit the invoice number.
Let's first locate the duplicate invoice number in QBO. Let me guide you how to get there:
Here's an article to learn more about the different ways on finding duplicate invoice in QBO: How to find duplicate invoice and other transactions.
To prevent duplicate invoice number in the future, we can customize your Accounts and Settings preference.
There you have it. Always feel free to drop by again anytime you need help. You have a wonderful day.
I have Custom transaction numbers turned off but QB is assigning invoice #'s used last year. For example the next invoice # should be #1146 but the system assigned 1111 which was used. I tried a few other recommendations and the system kept assigning #'s going up from #1111 so #1112 & #1113. This all started after I had to customize an invoice # by turning on "Custom transaction numbers" so I'm guessing it is still on even though I turned it off??
Thanks for joining us here, Daryl.
A possible browser issue might have been auto-assigning invoice numbers even if the feature was already turned off. Let's try a few steps to check if that's causing it. Here's how:
Use QBO in a private or incognito browsing session. Follow these keyboard shortcuts depending on the browser that you're using:
After logging back in, create a sample invoice and check if transaction numbers are no longer populating. If it's not, switch back to the regular browsing session.
Proceed to clearing out your browsing history. Here's an article to help you out: Clear cache and cookies to fix issues when using QuickBooks Online.
Other way of resolving the issue is to temporarily use a different browser while creating invoices to further check if this is a browser-related issue. QBO is compatible with any of these browsers:
Keep me posted if you have follow-questions so I can get back here and help you again.
This isn't a browser issue. We are having the same issue, whereby new invoices are being assigned invoice numbers that have already been used. Customer Transaction Number is turned off. It can't be a browser issue because our invoices are generated through Quickbooks API which automatically assigns the invoice number upon creation.
This issue only seems to come up within the past 3-4 months. I have read about a number of other users having the same issue recently. Could there have been a change that was made in the backend that could have contributed to this issue?
Thanks for joining this conversation, @accretive.
I see that you've posted the same question twice, and the other one was already answered by my colleague. Just in case you haven't been notified of the new response, here's the link: https://quickbooks.intuit.com/learn-support/en-us/reports-and-accounting/duplicate-invoice-numbers/0....
To keep the conversation streamlined and provide you with the best resolution, I'll ask that you post any follow-ups there.
Just in case, I'll add these articles for future reference:
I want to make sure everything is taken care of for you, so please let me know in the comment if you have any other concerns. I'll be here to assist. Have an amazing rest of the day!