You can delete invoices from the Invoices page, accessible from the Sales menu. If there's a payment against the invoice, you'll need to delete the payment before deleting the invoice.
A deleted invoice is removed completely from MYOB.
Cancelling invoices
If you'd like to cancel an invoice without deleting it (to retain a record of the invoice), create a credit for the invoice amount, then apply the credit to the invoice.
This closes the invoice without affecting your account balances.
To delete an invoice
Go to the Sales menu and choose Invoices. The Invoices page appears.
Click to open the invoice you want to delete. Need help finding an invoice?
Click the ellipsis menu (...) and choose Delete invoice.
At the confirmation message, click Delete. If you see a message about there being a payment against the invoice, you'll need to delete the payment before you can delete the invoice.
