How do I add an invoice that I want to link to the Product/Items Register?
The process is very similar to adding transactions via the Cashbook, with the following differences.
Ensure that you have chosen to Update Products/Items as 'From Invoices':
Add a new invoice using the relevant Account Code that is linked to the Products/Items Register.
In the Item Code or the Detail column, click on the down-arrow to access the Product/Item you wish to use.
Complete all the invoice details and then click on the OK button.
Note that product transactions will be added automatically if relevant.