Adding checkout page type to an existing site
This section explains how to add the KCO to an existing website, if you are not using Litium Accelerator version 5.4 or later.
To install Klarna V2 follow the instructions here >>.
Then to setup the KCO page type:
Copy the necessary files from the Acclerator 5.4 (or later) source into your solution and adjust the code so that it compiles with the Litium version you are using. Note that minimum requirement is Litium 4.7.9 for Klarna addOn to work.
After compiling you need to manually add the page type in Litium backoffice.
You add the Klarna Checkout page in back office and this is how you fill in all fields necessary.
This article describes how to change the Litium B2C Accelerator css styles for the Klarna checkout to have the same design and css styling (these steps apply only for accelerator 3.x versions)
This article explains how to change the Klarna checkout page, if your checkout page has partial page postback (Ajax like) behavior.