Both procedures will require a PIN and a TAN while completing payment process. This information will be given on the payment site of the provider. So you will only need the bank code and bank account number to start a test payment.
These test data will not work with Frontend. Frontend is a payment form that is provided by PAYONE Platform (URL https://frontend.pay1.de/frontend/v2/ or https://secure.pay1.de/frontend/). These test data will work with Server-API / Client-API / shop modules (e.g. Magento, Oxid, Shopware, …).
For tests please do not send any BIC or IBAN in payment-request. The customer will be redirected to SOFORT and should input a defined test-BIC to finish the payment-process.
Please notice that the amount in test mode is limited to 3900,00 Euro.