> For the complete documentation index, see [llms.txt](https://aliniex.gitbook.io/alix-pay/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://aliniex.gitbook.io/alix-pay/api-reference/on-off-ramp-api/off-ramp/review-off-ramp-order.md).

# Review off-ramp order

This endpoint is used to estimate the price of a crypto coin in fiat currency based on the specified order type. The price estimate is useful for both sell (off-ramp) transactions.

## API end-point

<mark style="color:green;">`POST`</mark> `/api/v2/on-off-ramp/review-sell-order`

This API allows you to review the sell order before make a confirmation to process

**Headers**

| Name         | Value                                                                                    |    |               |
| ------------ | ---------------------------------------------------------------------------------------- | -- | ------------- |
| Content-Type | `application/json`                                                                       |    |               |
| lang         | <p>The default will en if this param has been empty. </p><p>Supported languages:<code>en | cn | vi</code></p> |

**Request Body**

```json
{
  "partnerCode": "string",
  "currency": "string",
  "amount": 0,
  "fiatAmount": 50000,
  "network": "string",
  "paymentMethod": {},
  "fiatCurrency": {},
  "signature": "string"
}
```

<table><thead><tr><th width="178">Name</th><th width="100">Type</th><th width="109">Condition</th><th>Description</th></tr></thead><tbody><tr><td><code>partnerCode</code></td><td>string</td><td>Required</td><td>The code of partner has been provided to you during onboarding.</td></tr><tr><td>currency</td><td>string</td><td>Required</td><td></td></tr><tr><td>amount</td><td>number</td><td>Optional</td><td></td></tr><tr><td>fiatAmount</td><td>number</td><td>Required</td><td></td></tr><tr><td>network</td><td>string</td><td>Required</td><td></td></tr><tr><td>paymentMethod</td><td>string</td><td>Required</td><td></td></tr><tr><td>fiatCurrency</td><td>string</td><td>Optional</td><td>VND is default</td></tr><tr><td><code>signature</code></td><td>string</td><td>Required</td><td><ul><li>Partner will digitally sign the transmitted data using <strong><code>SHA256</code></strong> with RSA algorithm</li><li>The <strong>public key</strong> that has been provided to you during onboarding.</li><li>Data shall be signed according to the structure <strong>partnerCode|currency|amount|network|secretKey</strong></li></ul></td></tr></tbody></table>

**Response**

{% tabs %}
{% tab title="200" %}

```json
{
  "currency": 0,
  "network": "string",
  "amount": 0,
  "price": 0,
  "processingFee": 0,
  "systemFee": 0,
  "total": 0,
  "totalPayment": 0,
  "signature": "string"
}
```

{% endtab %}

{% tab title="400" %}

```json
{
  "error": "Invalid request"
}
```

{% endtab %}
{% endtabs %}

{% hint style="info" %}
**Signature**&#x20;

* Partner will digitally sign the transmitted data using **`SHA256`** with RSA algorithm
* The **private key** that has been of yours
* Data shall be signed according to the structure **currency|network|amount|price|totalPayment|secretKey**
  {% endhint %}


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