You can make any changes necessary for existing Sale Orders. To call the form for edit of sale order click " Sale Orders" button on the main form. From the Sale Orders List form, you have to choose the Sale Order and click on the "Edit" button( or double click on the Order row). You can change, add and remove Sale Order information using any functions of the Sale Order form . We don't recommend you to make any changes in the Sale Order after it has been sent to your customer. You can prepare another Sale Order for the required adjustment.