If you follow the above rules, you will receive a response like this:

{
    "products": [
        {
            "id": 1024,
            "name": "7 Days to Die | GL",
            "country": "GLOB",
            "variations": [
                {
                    "id": 6278,
                    "name": "7 Days to Die",
                    "voucher_currency": "USD",
                    "price": "18.1000",
                    "stock": 3,
                    "benefits": "Game"
                }
            ]
        },
        {
            "id": 879,
            "name": "A1 Voucher | AT",
            "country": "AT",
            "variations": [
                {
                    "id": 5566,
                    "name": "EUR 10 A1 Voucher",
                    "voucher_currency": "EUR",
                    "price": "11.7700",
                    "stock": 2,
                    "benefits": "Prepaid credit"
                },
                {
                    "id": 5567,
                    "name": "EUR 20 A1 Voucher",
                    "voucher_currency": "EUR",
                    "price": "23.5400",
                    "stock": 1,
                    "benefits": "Prepaid credit"
                },
                {
                    "id": 5568,
                    "name": "EUR 40 A1 Voucher",
                    "voucher_currency": "EUR",
                    "price": "47.0900",
                    "stock": 1,
                    "benefits": "Prepaid credit"
                }
            ]
        },
    ]
}

"id" - root voucher ID

"name" - voucher name

"country" - country for voucher redemption

"variations" - available options for purchase

"id" - variation voucher ID

"name" - variation voucher name

"voucher_currency" - currency of voucher application

“price" - price for the refill including discounts/commissions

"stock" - number of vouchers available

"benefits" - voucher description

If you receive a message such as:

{
  "error_code": -1
}

Review the list of errors Error Codes