[KRS 판매처리 (sales process) API]

1.URL
  POST https://api.storyway.co.kr/api/wssp/insertSaleInfo 

2.RequestBody (JSON) - [sales type]
    {
        "orderNo":"100000023",		// {st_order.order_no}
        "deptCd":"999991",			// {st_order.mall_code}
        "saleDate":"20230901",		// current date (YYYYMMDD, EX:20230901)
        "saleTime":"132153",		// current time (HH24MISS, EX:132153)
        "orderType":"1",			// "1" (store order)
        "saleAmt":10000,			// {st_order.order_amount}
        "delvAmt":1000,				// {st_order.delivery_amount}
        "pointAmt":3000,			// {st_order.use_point}
        "mileageAmt":30,			// {st_order.use_money}
        "couponAmt":450,			// {st_order.coupon_amount}
        "orderStat":"2",			// {st_order.smart_order_status}
        "itemCds":[
            {"itemCd":"8000001",	// {st_product.krs_item_cd}
            "itemNm":"TEST1",		// {st_product.product_name}
            "pluCd":"8809174211616",// {st_product.krs_bar_cd}
            "salePrice":9000,		// {st_order_product.sale_price}
            "saleQty":1,			// {st_order_product.order_count}
            "saleAmt":9000,		    // {st_order_product.product_amount}
            "saleAmtSup":8100,		// refer to calculation formula
            "saleAmtVat":900,		// refer to calculation formula
            "ovchSaleAmt":200,		// {st_order_product.discount_amount}
            "taxType":"1"           // {st_product.krs_taxn_se_cd}
            },		
            ...
        ],
        "payKey":"222",			// {st_order_payment.payment_key} (if data is not existed (when payment_amount=0), set empty
        "payType":"1",			// {st_order.payment_method}
        "payAmt":10000,			// {st_order.payment_amount}
        "cancelAmt":0,			// 0
        "payStat":"1",			// "1" (결제완료: payment complete)
    }
    
  1) calculation formula
    a) "saleAmtSup"
      - if st_product.krs_taxn_se_cd = '1', saleAmtSup = ROUND(saleAmt/1.1, 2)
      - else, saleAmtSup = saleAmt
    b) "saleAmtVat"
      - if st_product.krs_taxn_se_cd = '1', saleAmtVat = saleAmt - saleAmtSup
      - else, saleAmtSup = 0

3.RequestBody (JSON) - [sales cancel type]
  - same with No 2 - sales except
    "cancelAmt": {st_order.payment_amount}
    "payStat": "2" // 결제취소 (payment cancel)