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

# Purchase orders

> Use ADP preset applications to extract fields from purchase orders.

## Overview

Purchase orders use the document extraction API.

```http theme={null}
POST /open/agentic_doc_processor/{tenant_name}/v1/app/doc/extract
```

Async tasks use the same request body:

```http theme={null}
POST /open/agentic_doc_processor/{tenant_name}/v1/app/doc/extract/create/task
GET /open/agentic_doc_processor/{tenant_name}/v1/app/doc/extract/query/task/{task_id}
```

## Request parameters

| Name              | Type    | Required | Description                                                                            |
| ----------------- | ------- | -------- | -------------------------------------------------------------------------------------- |
| `tenant_name`     | string  | Yes      | Tenant name. Default: `laiye`.                                                         |
| `app_id`          | string  | Yes      | Unique ID of the preset application. View it in **View API**.                          |
| `file_base64`     | string  | Optional | Base64 content of the file. Use either `file_base64` or `file_url`.                    |
| `file_url`        | string  | Optional | Online file URL. Use either `file_url` or `file_base64`. Only HTTP URLs are supported. |
| `with_rec_result` | boolean | No       | Whether to return document recognition results. Default: `false`.                      |

## Purchase order fields

| Field                   | Type           |
| ----------------------- | -------------- |
| PO Number               | Text           |
| Order Date              | Date           |
| Seller Name             | Text           |
| Buyer Name              | Text           |
| Buyer Address           | Text           |
| Delivery Address        | Text           |
| Receiver Name           | Text           |
| Currency                | Text           |
| Total Amount            | Text           |
| Line Items              | Table          |
| Material Code           | Table subfield |
| Tax Rate                | Table subfield |
| Description             | Table subfield |
| Quantity                | Table subfield |
| Unit Price (Inc. Tax)   | Table subfield |
| Total Amount (Inc. Tax) | Table subfield |
| Delivery Date           | Table subfield |