Webhook

After a payment is processed, or status is changed, you will receive a callback (webhook) containing detailed information about the transaction. It is essential to validate the signature included in the callback to ensure the data's authenticity and integrity. (please refer to the Webhook validation section)

Once the signature is verified, you should synchronize the payment status on your side accordingly.

Below is a detailed list of parameters that may be included in the callback payload:

Field Name	Type	Required	Description
merchant_id	string	Yes	Merchant ID provided by Cashier Technical Support team and used in payment create request
application_key	string	Yes	Application Key provided by Cashier Technical Support team and used in payment create request
conversion_rate	float	Yes	Conversion rate between currency and processed currency used during amount conversion
customer	Object	Yes	Please refer to Customer object description
session	Object	Yes	Please refer to Session object description
transaction	Object	No	Please refer to Transaction object description
version	string	Yes	API version, for now only 1.3 is available
timestamp	int	Yes	Unix timestamp (Epoch time): Number of seconds (or milliseconds) since January 1, 1970 (UTC). Example: 1716735600