If you have an issue with using API credentials you’ve generated, start trouble-shooting here:

• Check that the test mode is disabled

• Try copy-pasting credentials again (check there are no typos or extra spaces)

• Verify that you’re using the correct integration (we offer 2 integrations – full checkout replacement and Klarna as a payment option within your existing checkout solution; your credentials will only work for the integration you’ve signed up for)

• Ensure you’re not using

  playground/test credentials
  when communicating with our live environment or the other way around

Still haven’t solved the issue? Contact our