post https://mapi.yuansfer.com/app-instore/v3/add
This API enables the merchant's POS system to generate a distinct transaction number, which will play a crucial role after the customer presents their payment barcode. This transaction number gets linked to the payment, and the merchant POS system can also assign its own reference number, which will be associated with the transaction number generated by Pockyt. This reference number can be used later for inquiries and reporting purposes. In essence, it facilitates the creation of a transaction object and provides customers with a transaction number to initiate their payments.