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Depending on the content of the received threedsdata block (units 3, 4, 5), the authentication proceeds differently.
For version 3D-Secure 2.0 (unit 3), if the interaction with the card holder is necessary (unit 4) and the issuing bank URL threeDSMethodURL is present (unit 5), the enterprise generates hidden HTML iFrame on the payment page (unit 8) and sends a POST request with one parameter threeDSMethodData to the received address threeDSMethodURL.
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Token payment
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