Void a Credit Note
Credit notes can be voided if they were entered in error as long as they are not included in a VAT Report or have not been partially or fully allocated/refunded.
Open an existing credit note in View/Edit mode. Use the Purchase Credit Note options drop down list to select the Void option, which will set all value fields in the credit note to zero.

Click the Save button to void the credit note.
Voided credit notes are still visible in the Purchases tab (Paid & All) to show that no gaps exist in the credit note number sequence.
