For Partners
For Acquiring Partners
Documentation
API Resources
K
Partner Portal
Partner Portal
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
Error codes and messages for Klarna Payments
Check out our usual error messages and what they mean
Testing tools
Guide
Validations in the payment process
Here you find information on the validations that occur throughout the payment process.
Payments
Testing tools
API
Guide
Tax handling
When using Klarna payments, it's important that you include correct tax details for each order.
Payments
Testing tools
Live
Guide
Error codes and messages for Order Management
Check out our usual error messages and what they mean
Testing tools
Guide
Sample payment data
Test your integration of Klarna Payment methods in playground environment using sample payment data to ensure compliance and a reliable integration.
Testing tools
Payments
Guide
Sample customer data
This page contains sample data you can use for testing your integration in the Klarna playground environment.
Testing tools
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
Sample customer data
This page contains sample data you can use for testing your integration in the Klarna playground environment.
Testing tools
Guide
Sample payment data
Test your integration of Klarna Payment methods in playground environment using sample payment data to ensure compliance and a reliable integration.
Testing tools
Guide
Klarna Docs - Before you test
Learn about the Klarna credentials required and data you need to have handy to test our solutions.
Testing tools
Guide
Error codes and messages
Klarna's API uses HTTP status codes for request outcomes: 2xx for success, 4xx/5xx for client/server errors, with details in the response body. Check PSP or Klarna logs for more.
Testing tools
Guide
Flows and error handling
Handle different Mobile SDK flows end-to-end and implement robust error handling.
Payments
Mobile
SDK
Testing tools
Guide
Merchant portal user guide
Klarna's Merchant Portal allows account management, order handling, report downloads, and marketing asset access. Features vary by onboarding method.
Testing tools
Payments
Conversion boosters
Guide
Test cases
In this section, you can find different scenarios for testing Klarna’s payment and checkout flows.
Testing tools
