> For the complete documentation index, see [llms.txt](https://docs.iexexchanger.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.iexexchanger.com/get-started/exchanger-api/obmen-i-zayavki/quotes-preflight-orders.md).

# Расчет, preflight и создание заявки

Заявку нужно создавать в три шага:

```
quote -> preflight -> create order
```

## 1. Рассчитать quote

```bash
curl -sS https://example.com/api/v3/private/exchange/quotes \
  -H "Accept: application/json" \
  -H "Content-Type: application/json" \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -d '{
    "route_id": 25,
    "amount": "100",
    "type_rate": "fixed"
  }'
```

Пример ответа:

```json
{
  "state": 0,
  "message": "OK",
  "result": {
    "quote": {
      "route_id": 25,
      "amount": "100",
      "receive_amount": "0.00102",
      "rate": "0.00001020",
      "type_rate": "fixed"
    }
  }
}
```

Quote нужен, чтобы показать расчет пользователю. Quote не создает заявку.

## 2. Проверить preflight

```bash
curl -sS https://example.com/api/v3/private/exchange/orders/preflight \
  -H "Accept: application/json" \
  -H "Content-Type: application/json" \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -d '{
    "route_id": 25,
    "amount": "100",
    "income_account": "FROM-REQUISITE",
    "outcome_account": "TO-REQUISITE",
    "type_rate": "fixed"
  }'
```

Если данных не хватает:

```json
{
  "state": 0,
  "message": "OK",
  "result": {
    "can_create_order": false,
    "missing_fields": [
      {
        "name": "outcome_account",
        "label": "Receive wallet"
      }
    ]
  }
}
```

Если можно создавать заявку:

```json
{
  "state": 0,
  "message": "OK",
  "result": {
    "can_create_order": true
  }
}
```

## 3. Создать заявку

```bash
curl -sS https://example.com/api/v3/private/exchange/orders \
  -H "Accept: application/json" \
  -H "Content-Type: application/json" \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -H "Idempotency-Key: create-order-user-42-001" \
  -d '{
    "route_id": 25,
    "amount": "100",
    "income_account": "FROM-REQUISITE",
    "outcome_account": "TO-REQUISITE",
    "type_rate": "fixed"
  }'
```

Пример ответа:

```json
{
  "state": 0,
  "message": "OK",
  "result": {
    "order": {
      "id": 913,
      "public_id": "EX-000913",
      "tracking_id": "TRK8K2LQ",
      "status": "created",
      "amount": "100",
      "receive_amount": "0.00102"
    }
  }
}
```

## Основные поля заявки

| Поле               | Обязательно                     | Что означает                        |
| ------------------ | ------------------------------- | ----------------------------------- |
| `route_id`         | Обычно да                       | ID направления.                     |
| `amount`           | Да                              | Сумма, которую пользователь отдает. |
| `income_account`   | Зависит от направления          | Реквизит стороны отдачи.            |
| `outcome_account`  | Зависит от направления          | Реквизит стороны получения.         |
| `type_rate`        | Нет                             | `fixed` или `floating`.             |
| `promo_code`       | Нет                             | Промокод.                           |
| `city_id`          | Зависит от направления          | Город для наличных направлений.     |
| `direction_fields` | Зависит от направления          | Дополнительные поля направления.    |
| `user_fields`      | Зависит от направления          | Дополнительные поля пользователя.   |
| `snapshot`         | Желательно, если API его вернул | Снимок условий направления.         |

## Совместимые alias-поля

| Рекомендуемое поле | Alias                    |
| ------------------ | ------------------------ |
| `route_id`         | `direction_id`           |
| `amount`           | `income_amount`          |
| `income_account`   | `from_requisite`         |
| `outcome_account`  | `to_requisite`           |
| `from_currency_id` | `income_payment_system`  |
| `to_currency_id`   | `outcome_payment_system` |

В новых интеграциях используйте рекомендуемые поля.


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