# Exchange Request

## `PATCH /V1/ExchangeRequests/{ID}`

Accept an exchange request.

### Request

#### Headers

| Header        | Type     | Description                                                                                               |
| ------------- | -------- | --------------------------------------------------------------------------------------------------------- |
| Authorization | `string` | Auth token using `Basic` scheme. See [API Keys and Secrets](/api/authentication.md#api-keys-and-secrets). |

#### Request Body

| Attribute           | Type     | Description                                                                                                                                                                                                                                             |
| ------------------- | -------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| SendingAddress      | `string` | The address that funds the source amount. Must be the same value as the `SendingAddress` you used when creating a new order.                                                                                                                            |
| ReserveTxnSignature | `string` | Reserve transaction signature used to reserve funds for the exchange.                                                                                                                                                                                   |
| Nonce               | `int`    | ***Optional***. Required if the source currency is Gluwacoin currency (ex> `USD-G`, `KRW-G`). Nonce is an integer used when creating reserve transaction signature. It must increase each time you make any new transactions (transfer, exchange, etc). |
| ExecuteTxnSignature | `string` | ***Optional.*** Required if the source currency `BTC`. Execute transaction signature used to execute the exchange when your funds are available in the reserve address.                                                                                 |
| ReclaimTxnSignature | `string` | ***Optional.*** Required if the source currency `BTC`. Reclaim transaction signature used to return the funds in the reserve address when the exchange fails or expires.                                                                                |

### Response

| HTTP Status |
| ----------- |
| 202         |

### Errors

| HTTP Status | Error Code             | Description                                                                                                                     |
| ----------- | ---------------------- | ------------------------------------------------------------------------------------------------------------------------------- |
| 400         | `InvalidUrlParameters` | Invalid URL parameters                                                                                                          |
| 400         | `MissingBody`          | Request body is missing.                                                                                                        |
| 400         | `InvalidBody`          | Request validation errors. See InnerErrors.                                                                                     |
| 403         | `Forbidden`            | Not authorized to use this endpoint. Make sure your authorization header is correct and you are using valid API key and secret. |
| 404         | `NotFound`             | Exchange Request not found.                                                                                                     |
| 409         | `Conflict`             | Exchange Request cannot be accepted because it already has been accepted or failed.                                             |
| 500         | `InternalServerError`  | Server error.                                                                                                                   |


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