Good morning, @food7574.
It's great to see a new face here in the Community. I can show you how to void a invoice in you QuickBooks Desktop account.
Don't worry, it's a simple fix.
All you need to do is locate the invoice and select the Void button within the invoice window.
It's that easy!
Feel free to reach back if you have any other questions or concerns. I'm always here to lend a helping hand. Take care!
I know a method to show the word " VOID" on the invoice.
QuickBooks Desktop has a variety of templates to choose from when it comes to invoicing customers. You'll be able to change the current template you're using to have the word "VOID" appear on your invoice. I'll show you how to do it.
For your reference, I've added this article on how to delete or void transactions in QuickBooks Desktop: Batch delete or void transactions in QuickBooks Desktop Accountant Edition.
Additionally, you can review this resource to learn how to check if an invoice has been opened and read: Verify that an invoice was emailed and read by the recipient.
Keep me posted in the comments if you need further assistance managing your invoice or sales forms. I'll be here to lend a hand.