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Hi, I'm implementing Payer Authentication (3ds) and had a working version that today suddenly stopped to work.When I submit the challenge in the challenge iframe, it post to: https://centinelapistag.cardinalcommerce.com/V1/TermURL/2.0/CCAit is a form...

I was wondering if using the sandbox with a merchant I can add a submerchant, maybe a transactional type?Also, I can not make the endpoint 'https://apitest.cybersource.com/boarding/v1/registrations/{registrationId}' work. It returned RESOURCE_NOT_FOU...