# ExchangeTransaction

Participate the transaction of exchange pair.

This method will use `30` [Compute Units](https://docs.validationcloud.io/v1/about/billing).

***

## **Parameters**

* `owner_address` - String - Trader's wallet address, in hex string format. This wallet contains the tokens you wish to sell, in order to gain the other token
* `exchange_id` - int32 - Transaction Pair ID
* `token_id` - String - ID of the sold token, in hexString format. For example, if you wanted to trade TRX for another token, then the TRX id of "5f" goes in this parameter
* `quant` - int32 - Quantity of the token being sold. If TRX is being sold, need to express in units of SUN
* `expected` - int32 - Expected quantity of the token being purchased
* `permission_id` - int32 - Optional, for multi-signature use
* `visible` - boolean - Optional. Specifies whether the address is in Base58 format (default: false)

## **Returns**

Transaction object - JSON object: Unsigned transaction, please refer to the [Transaction](https://developers.tron.network/docs/tron-protocol-transaction) chapter for the fields contained in it. Since the transaction type is `ExchangeWithdrawContract`, the fields contained in `raw_data.contract[0].parameter.value` in the transaction are as follows:

| Field          | Type   | Description                          |
| -------------- | ------ | ------------------------------------ |
| owner\_address | string | Account address                      |
| exchange\_id   | int64  | Exchange id                          |
| token\_id      | string | The id of the token to be withdrawn  |
| quant          | int64  | The amount of tokens to be withdrawn |

{% tabs %}
{% tab title="mainnet" %}

```bash
curl https://mainnet.tron.validationcloud.io/v1/<YOUR_API_KEY_HERE>/wallet/exchangetransaction \
    -X POST \
    -H "Content-Type: application/json" \
    -d '
{
  "owner_address": "TZ4UXDV5ZhNW7fb2AMSbgfAEZ7hWsnYS2g",
  "exchange_id": 12,
  "token_id": "31303030343837",
  "quant": 100,
  "expected": 10,
  "visible": true
}
'
```

{% endtab %}
{% endtabs %}