Signal that there is no intention to perform further captures and the remaining amount should be released. If the purchase was made by card then Klarna will refund the remaining authorization to the customer.
You and the customer are happy with the delivery and you have no need to change or update the order. The customer should thus not be debited for the remaining order amount, if the customer has paid by card the remaining amount should be refunded to the customer.
You need the specific order id to release the remaining authorization.
Klarna will respond with one of the following:
Error message - something went wrong
204 - No Content - The server has fulfilled the request