Klarna can't support multiple currency per website. To avoid rounding and mismatch issues Klarna only work with base currency and do not support using display currency (which is used by the currency switcher). To use multiple currencies you will need to setup multiple websites (with different URLs, configured in Magento at the "Website" level, not store view) for each currency.
Configuration
Create a Klarna merchant account. After completion of this step you will receive your company specific Admin Login Credentials.
Follow the official documentation to set-up Klarna for your store.
Navigate to: Stores ⇒ Configuration ⇒ Sales ⇒ Payment Methods ⇒ Klarna ⇒ Klarna API
Enable Klarna Checkout and fill in required credentials
Complete the required fields for the store location in Stores ⇒ Configuration ⇒ General ⇒ Store Information
Regions are not supported by Klarna. Please deselect all chosen options. in Stores ⇒ Configuration ⇒ General ⇒ State Options
Development
The ScandiPWA checkout includes a Klarna Iframe, which will inherit all customization settings from the admin configuration. To integrate with ScandiPWA, we opted to use the safer option
instead of setting the innerHTML for populating the iframe.
Detailed error handling has been implemented for cases when something goes wrong during the payment process. This includes catching and displaying error messages that Klarna's API may
return, as well as handling any unexpected errors that may occur. The error handling should be user-friendly and provide clear instructions for how to resolve any issues, such as by updating
payment information or contacting customer support.
We had integrated events that enable ScandiPWA to update the cart and price totals dynamically based on customer actions within the Klarna Iframe.
This module provides Klarna Checkout compatibility with ScandiPWA. The original module's official documentation is hosted here.
