Klarna Docs
API and SDKsSupport
Guide
Before you test
Learn about the Klarna credentials required and data you need to have handy to test our solutions.
Testing tools
Guide
Sample payment data
This section contains sample payment data you can use for testing your integration in the Klarna playground environment.
Testing tools
Payments
Guide
Error codes and messages for Order Management
Check out our usual error messages and what they mean
Testing tools
Guide
Test cases
In this section, you can find different scenarios for testing Klarna’s payment and checkout flows.
Testing tools
Guide
Go-live checklist
Before you go live, follow this checklist to make sure you're ready to start accepting Klarna payments.
Testing tools
Payments
Guide
Validations in the payment process
Here you find information on the validations that occur throughout the payment process.
Payments
Testing tools
API
Guide
Testing and integration checklist for Sign in with Klarna
Before you go live with Sign in with Klarna solution, follow this checklist to make sure your integration is tested and ready to be enabled in production.
Conversion boosters
Testing tools
Guide
Error codes and messages for Klarna Payments
Check out our usual error messages and what they mean
Testing tools
Guide
Sample customer data
This page contains sample data you can use for testing your integration in the Klarna playground environment.
Testing tools