---
title: "Create Order Metafield"
description: "Use POST /orders/{order_id}/metafields to create an order metafield. The operation is OrderMetafield.register."
canonical: https://docs.ordering.co/api-reference/guides/find-order-metafield-1/
---

# Create Order Metafield

> **API operation:** [Open the endpoint in Scalar](https://docs.ordering.co/api-reference/#tag/orders/POST/orders/{order_id}/metafields)

Use `POST /orders/{order_id}/metafields` to create an order metafield. The operation is `OrderMetafield.register`. This POST creates a record. See [Extra attributes](https://docs.ordering.co/api-reference/guides/extra-attributes/) for metafield values.

## OpenAPI reference

**Operation:** `POST /orders/{order_id}/metafields`

**Path parameters**

| Name       | Type    | Required | Description |
| ---------- | ------- | -------- | ----------- |
| `order_id` | integer | Yes      | —           |

**Request body fields**

| Name         | Type    | Required |
| ------------ | ------- | -------- |
| `model`      | any     | Yes      |
| `object_id`  | integer | Yes      |
| `value`      | any     | Yes      |
| `value_type` | string  | Yes      |

**Responses**

| Code | Description                           |
| ---- | ------------------------------------- |
| 200  | OK (Envelope)                         |
| 400  | Bad Request (ErrorResponse)           |
| 401  | Unauthorized                          |
| 404  | Not Found                             |
| 429  | Too Many Requests (ErrorResponse)     |
| 500  | Internal Server Error (ErrorResponse) |
| 503  | Service Unavailable (ErrorResponse)   |

[Open this operation in the API reference](https://docs.ordering.co/api-reference/#tag/orders/POST/orders/{order_id}/metafields)