3DS External OTP Notifier

Below you will find a list of endpoints that you should implement on your server side. Please pay special attention to the appropriate security of our connection, the syntax of requests that you can expect from the Verestro side, idempotency and the exact way in which you should respond to each request.


Request body:

"event": "trx_otp", "cid": "CODEGO20251106123", "otp": "123456", "merchantName": "amazon", "currency": "EUR", "amount": "56.00"


Field Explanation

event: "trx_otp" Indicates this webhook is triggered for a transaction OTP event.

cid: "CODEGO20251106123" Unique transaction ID or customer transaction identifier used for tracking.

otp: "123456" One-Time Password generated for the customer to authorize the payment.

merchantName: "amazon" The merchant the customer is trying to pay.

currency: "EUR" Currency of the transaction.

amount: "56.00" The transaction amount.