I have connected my online store with your API, do I have to do anything?

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Not at all. Viva wallet will implement everything that you need. We at Viva Wallet are all set for PSD2. The Strong Customer Authentication (SCA) provides stronger security for both merchants and cardholders. You have the ability to request cardholder authentication, significantly reducing exposure to fraud. Cardholders with 3DS-enrolled cards can be certain that no transactions will be authorized without their consent.