Implementing APIs

Alipay does not recommend any order for implementing the APIs. However, Alipay requires the integrator to implement all the following APIs.

• Forex_refund: Refund a transaction.
• Single_trade_query: Obtain the information on a particular transaction.
• Forex_rate_file: Obtain the exchange rate from Alipay.
• Notify_verify: Validate whether a notification is from Alipay Server to asure the authenticity of the response data.