Ecoupon Inquiry Usage Inquiry product detail \ balance \ activity of this coupon, support e-Buy Ecoupon and thirdparty ecoupon. Transaction Flow The transaction process will collect QR code message thru scanning or direct input through keypad, and it will send to  e-Buy backend  server after collection to further process. action ecouponInquiry Request body,Cashier POS===> e-Buy Backend Field Type Mandatory Description Memo traceNo String Yes Cashier terminal trace no. No repeat qrcode String Yes ecoupon code ecoupon code for inquiry Request body example { "traceNo": "99000009100010101732123", "qrcode": "HDCP00000000001235" } Response body, e-Buy Backend ===>Cashier POS Field Type Mandatory Description Memo traceNo String Yes Cashier terminal trace no. No repeat orderNo String Yes Order No. from e-Buy Unit : dollar transDate String Yes Transaction time Format:yyyyMMddHHmmss returnCode String Yes Return code 00 represent successful transaction, else represent fail returnDesc String Yes Return message Detail explanation / error message per transaction result canPayAmount Price Yes Balance of this coupon Unit : dollar activityProductNo String No Activity Product no. The activity Product no. this coupon belongs to activityProductName String No Activity Product name The activity Product name this coupon belongs to Response body example { "traceNo": "99000009100010101732123", "orderNo": "171698602301", "transDate": "20161231120533", "returnCode": "00", "returnDesc": "SUCCESS", "canPayAmount": 40.8, "activityProductNo": "2016123101", "activityProductName": "中信365权益" }