Request:
POST https://api.maxbonus.ru:38200/api/cashbox/check
{
    "coupon": "687523388469",
    "customer_token": null,
    "items": [
        {
            "code": "9918",
            "index": 1,
            "mrc": 0.0,
            "price": 6000.0,
            "qty": 1.0
        },
        {
            "code": "9934",
            "index": 0,
            "mrc": 0.0,
            "price": 2500.0,
            "qty": 1.0
        }
    ],
    "pay_bonus": null
}

Response:
{
    "statusCode": 200,
    "message": "Data retrieval successfully",
    "data": {
        "code": null,
        "calc_id": "a0779ffe79c4eda06a51ba429daefcde",
        "customer_token": "88888888888",
        "customer_total_bonus": 0,
        "total_max_bonus_can_pay": 0,
        "total_bonus_pay": 0,
        "total_add_bonus": 0,
        "total_discount": 0,
        "total_check_amount": 8500,
        "campaign_id": 0,
        "campaign_name": null,
        "coupon": "687523388469",
        "coupon_used": "",
        "items": [
            {
                "code": "9918",
                "qty": 1,
                "sum": 6000,
                "max_bonus_can_pay": 1800,
                "calc_discount": 0,
                "calc_bonus_add": 0,
                "not_exist": false,
                "not_discount": false,
                "index": 1,
                "price": 6000,
                "action": 0,
                "pay_bonus": 0
            },
            {
                "code": "9934",
                "qty": 1,
                "sum": 2500,
                "max_bonus_can_pay": 750,
                "calc_discount": 0,
                "calc_bonus_add": 0,
                "not_exist": false,
                "not_discount": false,
                "index": 0,
                "price": 2500,
                "action": 0,
                "pay_bonus": 0
            }
        ],
        "coupon_code": "0",
        "coupon_message": "Купон не найден в чеке"
    },
    "backendExecTimeSec": 0.229987
}