Goods Detail JSON Key为 goodsDetail , mandatory Field Type Mandatory Description Memo goodsCategory String Yes Goods Category   goodsId String Yes Goods ID   goodsName String Yes Goods Name Used for report , receipt, slip printing goodsSpec String No Goods Spec Shows in report or receipt price Price Yes Price Unit : dollar quantity Integer Yes Quantity   rebateCode String No Rebate Code Cashier Terminal has pre-set the discount, mandated activityNo String No Activity No Once  e-Buy backend  system confirm transaction success, a transaction activity number will return back memo String No Memo Once  e-Buy backend  system confirm transaction success, some information will return such as electronic voucher number voucherId String No Voucher ID Return when have voucher_detail