Opening Stock To add opening stock: Go to List Products Actions > Add or Edit Opening Stock Editing opening stock (or) Making opening stock 0: NOTE: If you have already added an opening stock and have to edit it, follow the steps below. Click the ‘+’ symbol. A new row will be created Add the new amount there To make the opening stock to ‘0’, add a negative value in step 3 E.g.) If the existing opening stock is 10, add -10 to make the stock quantity to 0 or if you add a negative amount (-4) then the amount will be 6.