For a cancellation to be successful, there must be no captures on the order. The authorized amount will be released and no further updates to the order will be allowed. Please note that a canceled order cannot be reopened.
The customer has decided not to proceed with the purchase and wants to cancel the order before shipping the product.
Fig.1 Cancel an authorized order
POST /ordermanagement/v1/orders/{order_id}/cancel
Authorization: Basic dXNlcm5hbWU6cGFzc3dvcmQ=
Content-Type: application/json
Klarna will respond with 204 . The server has fulfilled the request or an error message
HTTP/1.1 204 No Content