It's good to hear from you today, lilian-ong.
Voiding a credit note is quick and easy. I'd be happy to show you how.
- Find and open the Credit Note.
- Click More at the bottom.
- Hit Void.

- Click Yes.
There's also a guide on deleting transactions here that you may find helpful.
Feel free to drop me a reply below if you need additional assistance. You have a wonderful day!