Hello there, accounts457.
Let me share informtion on how to start fresh and start over with invoice numbering.
If you want to start over with Invoice number one, just ensure that you'll have a specific character if you already used Invoice No. 1 in the past. For example, Invoice No. 1A or 01 since the system will not allow duplicate transaction numbers. After you've decided how to start over with your invoice numbers, the next time you'll create a new invoice, the succeeding number will automatically populate.
On the other hand, if you want to start fresh or start over from scratch, you can use this link that will walk you through the details steps: Delete your data and start over in QuickBooks Online.
Feel free to use these links on how you mange your sales forms:
Should you have other questions, please don't hesitate to post them here. Take care and have a great day!
