Checkout API - Configure the payment methods - Mercado Pago Developers
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Checkout API (credit or debit cards)

  1. Within your Salesforce Commerce Cloud store, go to the Merchant Tools menu and click the Payment Methods option found within the Ordering group of options. You can also find the option using the menu search engine.
  2. To activate the credit or debit cards payment method, position yourself on the CREDIT_CARD option. Then, in the column "Enabled" and select the option Yes to enable it.