Sales Orders

• When do I need to create a sales order?
• How do I associate multiple sales orders to an invoice?
• I have chosen the preference to close my sales order when the shipment is fulfilled. Why is my sales order closed even before creating the packages and shipments?
• What is “Instant Invoice” in sales orders? How do I create an instant invoice from a sales order?
• How do I link a sales order to a purchase order?
• How do I restrict users from editing a closed sales order?
• How do I retain the address used in sales orders when I convert them to invoices?
• Will sales orders affect my inventory?
• How do I transfer a custom field from a sales order to an invoice?
• When do I use the void and cancel items options in the Sales Order?