Prerequisites
In order to use this solution, you (merchant) will need below information.
Administration related:
- Merchant ID starts with 2160 (obtained by signing contract with AlipayHK BD)
 
Technical related:
- Signature Key Pairs (see Digital Signature, send the public key to AlipayHK SA for configuration)
 - Client ID (obtained after configuration by AlipayHK SA, requires merchant ID)
 - AlipayHK user ID starts with 2160 (obtained through JSAPI and API)