Technical and Integration

Check the following: - If you use API-credentials for production, make sure that the test mode is switched off. - If you use API-credentials for our test environment, make sure that the test mode is switched on. - If the problem is still there please contact our Merchant Support for further assistance.

Make sure that the shipping method is entered correctly. If you use Magento, it might also be because Magento requires details in the checkout that Klarna does not collect, such as state and province.

To test your checkout you need test credentials. These can be found by logging in to our test environment with the same login details you use for the Merchant Portal. Go to "Settings" in the top right corner and click on "Generate test credentials". Enter these in your Klarna plugin and activate test mode. You will then see a green box with the text "Testdrive" in Klarna's checkout.

Go to the Settings app in the Merchant Portal. There you can generate new API-credentials by clicking on "Generate new API-credentials". Remember to save the new API credentials since you will only be able to see them once.

To be able to start integrating with Klarna you need to have a functional website. This means that you need to have information on your products and it need to be possible to add products to a shopping cart.

Step 1 Complete all your company details, including your store name, the webpage's URL, the email address of the authorized signatory, organisation number, VAT-number, the country in which you are registered, sales segment. Step 2 You will receive your API-credentials, your Merchant ID and a shared secret which enables the possibility to take orders. In this step you will also be granted access to test credentials that you can use to make test purchases in your checkout before going live. Step 3 Activate your payouts. Before doing so you need to integrate your live credentials in your platform.

Your username and password are your API-credentials. If you do not have your API-credentials, you can generate these by going to the Settings app in the Merchant Portal.

The first step is to fetch your API-credentials which you will then add in your platform to start to register purchases. To fetch your API-credentials you need to log in to the Merchant Portal and enter the Settings app. There you will be able to generate your API-credentials.

Klarna offers a simple tool to insert dynamic payment plans directly on your web store. Follow the instructions at https://developers.klarna.com/en/gb/kco-v3/on-site-marketing/getting-started/ to get started with the On-site Marketing Platform.

By adding the Klarna badge(s) to your website, your shoppers will know they have trusted payment options at time of checkout. Head to https://brand.klarna.com/#/merchants to retrieve the payment badges for your site.

We have assembled a toolkit complete with logos, icons, text, and other inspiration to be used on your website. Read more about promoting Klarna payment options to your shoppers at https://guidelines.klarna.com/co-marketing-us.