If you want to use MercadoPago in Botmerze, at first, you need to get your client ID and client secrets, and you have to set up your mercadopago gateway settings. Go to “Payment Gateway> mercadopago”.
Credentials are unique passwords that identify an integration in your account. They allow for the capture of payments in online stores and other applications securely. They can be found on the Dashboard or in your Mercado Pago account by accessing Your Business > Settings > Management and Administration > Credentials.
For more info, please visit
https://www.mercadopago.com.br/developers/en/guides/resources/credentials