How do I get the estimate number to appear on the invoice?

I know a way on how to get the estimate number to appear on the invoice, userbev1. 

We can create a Custom field and name it as Estimate number and manually enter them the number. Let me show you how:

1. Create an invoice.
2. Click the Gear icon on the transaction.
3. Tap the + Add custom field link.
4. In the Name field, type Estimate Number.
5. Select category and forms.
6. Press Save.

To learn more about customising your sales forms, check out this article: Customise invoices, estimates, and sales receipts in QuickBooks Online. We can also customise sales forms by location to make it easier to track sales by a specific site.

Feel free to browse this link here if you need help with your company's income and customers. It'll route you to our general customer topics with articles.

I'd like to know how you get on after trying the steps, as I want to ensure this is resolved for you. Feel free to reply to this post and I'll get back to you. You have a good one.