As a developer you can use our Sandbox for testing and
for development purposes of PSD2 APIs with mocked data.
One of the key points of PSD2 is to oblige all payment service providers to implement specific APIs to enable sharing of basic customer account information with other financial institutions in order to initiate payments. This sharing of information is only allowed once the customer explicitly provides consent.
You can get started using our Open Banking Sandbox portal and you can find the relevant documentation.