Production or Test Environments

We offer separate test environments in order to avoid compatibility issues, resulting from changes in our backend systems.

To benefit from our best service you should implement a server host selection in your shop or web application. You should be able to connect to either production or one of the test environments with ease.

Always test Sofort payments with 88888888 (eight times 8) as IBAN or BIC. Otherwise, the payment will be executed even if the transaction was created in demo mode or on our test servers. Please make sure this is considered when working with demo transactions or on test servers.

Do not test PayPal payments with non-demo transactions on our test servers. This will result in live transactions on PayPal side. Make sure you always use demo transactions to test PayPal, as these will go to the PayPal sandbox. In future our test servers may deny the authorisation of non-demo Smart Transactions for PayPal.

These environments are available for development or production:


Base URL





Should be used during you development phase
and for automated tests.


Preview of new features which are maybe released in the next days.

Please use the same option names in your selection in order to avoid misconceptions.