Glossary
Glossary of the main business and functional terms used in Checkout API documentation.
Checkout
A payment session created by the merchant to collect money for an order. Includes order, payer, and payment data representing the full payment process.
Merchant
A registered business entity authorized to accept payments through maib’s acquiring system.
Terminal
The merchant’s point of sale or integration endpoint through which transactions are processed.
Order
The purchase or service request initiated by the customer and represented in the checkout process.
Payer
The customer who performs the payment using one of the available payment methods.
Payment Method
The channel used to make a payment (e.g., MIA QR, Card, Apple Pay, A2A).
Refund
The process of returning funds for a completed payment due to a cancellation or return.
Callback
A system notification sent by maib to the merchant’s server containing the final payment result.
Sandbox
The testing environment that simulates transactions without real payments.
Status
Indicates the current state of the payment or checkout (Created, WaitingForPayment, Completed, Cancelled, Refunded).
Signature
A digital verification hash confirming the authenticity of callback notifications.
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