The Orders API uses the terms orders, payments, shipments, and captures. These distinctions are used to point out the different steps in the payment process and to initiate certain tasks.
An order is the complete order of a customer. When an order is sent to the system, a payment will automatically be created.
The actual payment your customer has to fulfill.
The ‘shipment’ is used to show an order has been sent. When a shipment is made, the bill will be sent to the customer.
The collection of the amount due. Mollie automatically creates a capture when a shipment is created.