From the main tool bar, click on the Debtors button
Click on the Invoices tab
Click on the Add button
Enter the Customer Name (or select from drop down list).
Enter Date, Terms, Form type as Credit Note, Ref. (Reference),Note, etc.
In the Detail section, enter invoice details, Account, Enterprise (if applicable), Quantity, Rate/Price, and/or Total. You can enter as many invoice lines as required. Lines may contain Detail information only e.g. for a long description on a service type invoice.
Enter credit amounts as negative figures ie. put a minus sign in front of the amount.
Click the Print button to preview the Credit Note and then click the printer icon if required.