[Klarna][Checkout v2] The documentation states that the «shipping_address.title» field is read only, but really the API allows to pass it in

Extensions Klarna
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1

https://developers.klarna.com/en/se/kco-v2/checkout-api#address-object-properties

{
    <...>
    "purchase_country": "at",
    "purchase_currency": "eur",
    "locale": "de-at",
    <...>
    "shipping_address": {
        "title": "Herr",
        <...>
    },
    <...>
}

It is then shown on the Klarna’s payment form.