Back orders are handled automatically with Cloud Fulfilment. Orders can be allocated a priority, and if not they'll be processed on a 'first come first served' basis. That means once your stock arrives your back orders will automatically be allocated stock and despatched to your customer.
If only part of the order is out of stock, it's possible to split the order. When you split the order, the available stock is despatched immediately and you can choose whether to create a back order for the other lines, or just remove them from the order altogether.
All of these functions can be managed yourself, simply and in real-time using our online portal.