Please refer to this Klarna documentation on how to set up your test cases:
Klarna Test Cases
Positive testing credentials (Germany):
Please refer to the Klarna documentation for more test cases: https://developers.klarna.com/kpm/test-credentials/
Please refer to your Paysafe documentation for specific data, though any reasonable test data should do.
Please refer to your Ratepay documentation for specific data, though any reasonable test data should do.
You can test your implementation of our API for Ratepay in test mode using these shop-IDs: