For commercial reasons, the payment method PEC (pagamento em lotérica) is no longer available for receiving payments on Mercado Pago.

Due to an internal update, it is no longer necessary to send the issuer_id (ID of the issuing bank) in the requests for: Create customer and card, Add new cards to a customer, and Receive payments with saved cards.

We have updated the documentation for the Mercado Pago Cards plugin on the Shopify platform to indicate that using email as the contact method that customers must provide to receive order notifications is mandatory for processing payments with Mercado Pago.

We've added the description of the external_id parameter to the POS API. This field is used to indicate the unique ID of the cash register as defined by the integrating system.