Install Klarna Shipping Services (KSS)
This section demonstrates how to add Klarna Shipping Service to the checkout page of Litium Accelerator 7.4.2 or Litium Accelerator 6.3.9.
Getting started
- Install Litium Accelerator 7.4.2 or 6.3.9.
- Remove Klarna.Rest.Core reference from your projects if there is any.
- Install or update the latest Klarna add-on.
- Go to the Configure KSS section for configuration of the KSS.
- Click here to make the site visible to Klarna background calls.
Add KSS to fresh Accelerator
Follow the steps below to add KSS to the Accelerator checkout page.
- Download the corresponding zip package.
Litium Accelerator 7.4.2
Litium Accelerator 6.3.9
- Unzip and copy files to your Accelerator.
These files are structured based on the Accelerator. If you want to see what are changed, you can use a file comparison tool to compare them.
- Open solution, include new files and build.
- Run BuildClientProjects.bat to apply the client changes.
How it works
This sequence diagram describes both Accelerator and Klarna KSS integration.

- When shoppers input their address or select a shipping method in the iframe, an event will be triggered to send the shipping option data to update into Cart.
- At the same time, there is a request from the Klarna server to the Accelerator to update the Order on disc.