How do i add my ABN to invoice without having to put it in the message area please?

Welcome to the Community, anita-j-glover-g.
 

You've come to the right place for assistance. 

It will just take a few clicks to add this information to the invoice. You can simply edit your template to include your Australian Business Number (ABN). Here's how to do it:

1. Click the Gear icon at the top.
2. Select Custom Form Styles under Your Company.
3. Find your template from the list, then click Edit from the Action column.
4. Go to the Content tab, then select the header of the invoice.
5. Tick the ABN checkbox, then hit Done.

To learn how to design and personalize the layout of your sales forms, I recommend reading this article: Customize invoices, quotes, and sales receipts in QuickBooks Online.

As always, you can find me here if you need assistance in dealing with your other tasks in the program. Have a pleasant day ahead!