Notice
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The currency type for transaction is HKD (Hong Kong Dollar) by default. The unit used in payment amount is "cent" and must be an integer.
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Payment result notifications may be sent from the payment system to the Merchant’s backend multiple times, a single payment result might be notified to the Merchant’s backend multiple times. For this reason, the Merchant’s system must be able to handle duplicate notifications properly.
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After receiving payment result notifications from Merchant’s backend, merchant’s system should process the status of their order and should return the string "success" (case insensitive). The payment system will continue to send payment result notifications within three hours if the payment system do not receive merchant’s response with the string "success".
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Parameter names are case-sensitive
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All parameters are passed as string value
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The timezone of all the datetime-related parameters are GMT+8.
