> ## Documentation Index
> Fetch the complete documentation index at: https://doc.haipay.net/llms.txt
> Use this file to discover all available pages before exploring further.

# Payout Order Voucher

> Retrieve the payout order voucher image.

**URL:**

`/common/voucher`

**Parameters:**

| Parameter | Required | Type   | Description                             |
| --------- | -------- | ------ | --------------------------------------- |
| appId     | Yes      | Long   | Business ID (obtained from the backend) |
| orderNo   | Yes      | Long   | Platform order ID                       |
| sign      | Yes      | String | Signature                               |

**Response Data:**

* The base64 encoded image of the voucher.

## Related Topics

* [Common API Overview](/docs/en/api/version2/CommonApi)
* [HaiPay API Description and Common Rules](/docs/en/guide/api_description_guide)