[31.12.2021] Dear All, we would like to inform you that we plan to ex-change the current API address and endpoints specification for Aion Bank dedicated interface.

On the 1st of April, 2022 we plan to switch to the new dedicated interface. Detailed specification can be found on our new developer portal: During this transition period, the current API is fully functional, the new API can be tested on sandbox environment whereas production API on WebtoWeb redirection flow.

Consents that were created before 1st April, 2022 will be still active, to use them you still need to use the old api address. 

If you have questions or need more information, do not hesitate to contact us: email.


[17.07.2020] In accordance with the correspondence received from the National Bank of Belgium dated 10.03.2020, Aion has received an exemption from the obligation to put in place an emergency mechanism according to the Article 33.6 of Regulatory Technical Standards for Strong Customer Authentication and Common and Secure open standards of Communication



PSD2 is the second Payment Services Directive, designed by the countries of the European Union (Directive (EU) 2015/2366 of the European Parliament and of the Council of 25 November 2015 on payment services in the internal market). 

The PSD2 Directive was implemented into Belgian law by the Act of 11 March 2018.




  • Increases the security of payments in electronic banking by
  • introducing two-step verification through at least two elements from the following categories:
    • knowledge; information only known to you, e.g. password, PIN,
    • ownership; something that only you have access to, e.g. telephone, token, payment card,
    • your own features, e.g. biometric data,
  • Introduction of payment services as part of open banking.



Thanks to PSD2 you get:

  • access to all payment accounts (kept in various banks) in one place,
  • immediate verification of the current financial situation,
  • secure transaction confirmation,
  • automated processes, e.g. credit verification process,
  • access to open banking and consent management for external service providers.


The test environment for TPP can be found at:

If you have any further questions, please do not hesitate to contact us at

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