Since new update - we are seeing “this invoice number already exists” and I have to keep typing numbers in to find the next available inv # Help

Thanks for dropping by the Community space, @onecallvent.

I tried adding an invoice with a duplicate number to recreate the same pop-up message. However, the warning notification I received is different. 

Please see screenshot for visual reference:

May I know if you're using a 3rd-party app in recording invoices? If so, I recommend contacting the software's support team for help in getting around the issue.

If not, let's try turning off the Custom transaction numbers feature in the program. That way, the program will automatically assign the right numbers to your sales forms. 

Here's how:

1. Go to the Gear icon and select Account and Settings.
2. Select the Sales tab and click the pencil icon in the Sales form content section.
3. Deselect Custom transaction numbers.
4. Hit Save, then Done to record the new setting.

For more information, please check out this article: Change the invoice number on sales forms.

Check out this video tutorial in recording an invoice for reference: How to create a customer invoice.

You can always visit us here if you have any other concerns. I'm here to help. Have an awesome day!