Adjustment event

This webhook event is triggered when a payment amount has been adjusted after the initial transaction. The event includes the adjusted amount and references to the original payment for proper transaction reconciliation.

Webhook Example

{
    "checkoutReference": "kxhbi28jdlo55lbk1u4eskmprbdd9mkh6cj5mpotlduclf13fi",
    "payfacReference": "4WHT92XEIL2EXMHZ",
    "merchantReference": "23770963420369",
    "amount": "48900",
    "currency": "ISK",
    "reason": "",
    "success": "true",
    "hmacSignature": "urlLKKMuoPZK4w6IAoGMiKKbKsG2CYyUN/2CiXeGumA=",
    "additionalData": {
        "eventType": "Adjustment",
        "authCode": "123457",
        "cardNumber": "411111******1111",
        "cardUsage": "Debit",
        "originalPayfacReference": "OOJWITWVQV42PSE8",
        "paymentMethod": "VI",
    }
}

info

HMAC key: 388845ce3c794d9bb8e7082a57a05395c2830f556a29f8e4

Headers

In the Authorization header, we will set the matching Api key for your webhook.

Fields

You will always get these fields.

Field	Type	Description
checkoutReference	nullable string	Unique identifier for the payment that was done through a checkout.
payfacReference	string	Unique identifier for the transaction generated by the payment service provider.
merchantReference	nullable string	The identifier for the transaction provided by you, the merchant, allowing for correlation with the merchant’s system.
amount	string	The transaction amount in the minor currency unit.
currency	string	The three-letter ISO currency code.
reason	nullable string	A field that provides additional context in case of transaction errors or declines, helping diagnose specific issues.
success	string	Indicates the transaction status (true/false).
hmacSignature	string	A cryptographic signature generated using a secret, enabling verification of the message authenticity and ensuring it hasn’t been tampered with.
additionalData	object	An object for the additional details included in the event.

Additional Data Fields

Fields you will get depend on the event type of the webhook.

Field	Type	Description
eventType	string	A string representing the type of event that occurred.
authCode	nullable string	An authorization code is a unique series of letters or numbers generated by a card issuer or bank to validate a card transaction.
cardNumber	nullable string	A partially masked PAN.
cardUsage	nullable string	The source of funds used for a transaction.
originalPayfacReference	nullable string	This field indicates the payment request associated with the original payment.
paymentMethod	nullable string	The payment method used in the transaction.