We included Prepaid Card (prepaidCard), under the brands Visa and Mastercard, as a possible value to be used as a payment method (paymentMethods) in the Payment and Card Payment Brick.

The dimensions and fiscal_data objects have been added to the items parameter of the Preferences API, where the dimensions of the item to be sent and its respective fiscal data will be presented.

The payment identifier field (payment_id), which currently accepts 11 digits (up to 99,999,999,999), will start accepting 12 digits (from 100,000,000,000 to 999,999,999,999). This change will occur in the coming weeks, so please review your integration if necessary to avoid transaction errors.

From now on, the user ID fields, which were previously of type Int32, have changed to the Int64 format. If your application uses this information through fields such as ‘user_id’, ‘payer_id’, ‘collector_id’, or any other reference to user IDs provided by Mercado Pago, your integration may generate errors if you do not make the necessary adjustments. See more details here.