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It is now possible to set a dynamic redirect_url when constructing the authorisation URI.  This helps to perform more dynamic tests with your application.  Whereas TPPs until now needed to use localhost value when building the authorisation URL, they were as well redirected to localhost after the authentication steps. With the latest version, TPPs will now be able to build the authorisation URL with any URI value they want in the redirect_uri parameter. Doing that, and after the authentication steps, they will be able to simulate the redirection to their testing application.