Why does my order have more than one order number?
Your order will have at least two different numbers. One number is your order number and the other number(s) is your shipment number. If you place an order and all your items are shipped in one shipment, you'll have one order number and one shipment number. If your order contains items that require separate shipments, you will have one order number and one shipment number for each shipment. The order number references the whole purchase while the shipment number references just that shipment.