I dont get the invoice # automatic

Welcome to the QuickBooks family, @allinonesystemsm.

Let me help you with your invoice concern in QuickBooks Online.

If you want the system to add the numbers automatically, you can configure your settings. You have the option to turn off custom transaction numbers from the Sales section.

Here's how:

1. Go to the Gear Icon.
2. Choose the Sales menu.
3. Scroll down to the Sales form content section.
4. Remove the checkmark on the Custom Transaction Numbers tick box. 
5. Click the Save button.
6. Hit Done.

If you want to create a transaction with a specific number, I recommend enabling the option. It allows you to make changes to the figures using the invoice number field.

Also, please note that the number will increment by one based on the last created invoice. For example, if the previous number you create is 100, the next invoice will automatically show 101 in the number field.

I've also included some articles in case you need some ideas about setting your own numbering preference and customizing templates in QuickBooks:

• How to change the invoice number on sales forms
• Customize invoices, estimates, and sales receipts in QuickBooks Online

Drop me a comment below if you have any other questions. I'll be happy to help you some more.