Describe step by step what happens in the Order to Delivery Process sequence diagram.

The Order to Delivery Process sequence diagram describes the steps from placing an order to its delivery to the customer. The process typically includes the following stages:

1. Order receipt: The customer places an order through an interface (website, app).
2. Stock check: The system checks warehouse inventory.
3. Order confirmation: If the item is available, the system confirms the order to the customer.
4. Order preparation at warehouse: The warehouse receives a task for picking and packing the item.
5. Shipment: The item is handed over to the delivery service.
6. Delivery to customer: The courier delivers the order to the address.
7. Confirmation of receipt: The customer confirms receipt of the order.

The diagram shows interactions between participants: the customer, the order system, the warehouse, and the delivery service. Each message is a method call or event reflecting data transfer or command.

For example, the customer calls placeOrder(), the system responds with confirmOrder(), the warehouse receives prepareShipment(), the delivery service executes shipOrder(), and so on.