---
title: "Create Extra Option Metafield"
description: "Use POST /business/{business_id}/extras/{extra_id}/options/{option_id}/metafields to create a metafield on an extra option."
canonical: https://docs.ordering.co/api-reference/guides/find-extra-option-metafield-1/
---

# Create Extra Option Metafield

> **API operation:** [Open the endpoint in Scalar](https://docs.ordering.co/api-reference/#tag/business/POST/business/{business_id}/extras/{extra_id}/options/{option_id}/metafields)

Use `POST /business/{business_id}/extras/{extra_id}/options/{option_id}/metafields` to create a metafield on an extra option. The operation is `ExtraOptionMetafield.register`.

The operation requires administrator or business-manager authentication. The controller verifies the business-extra-option chain, applies manager ownership checks, and binds the metafield to `option_id`. `value_type` accepts `integer`, `decimal`, `boolean`, `text`, or `json` .

This POST creates a metafield. Dynamic metafield keys may require additional validation. See [List extra option metafields](https://docs.ordering.co/api-reference/guides/get-extra-option-metafields/) for the related collection.

## OpenAPI reference

**Operation:** `POST /business/{business_id}/extras/{extra_id}/options/{option_id}/metafields`

**Path parameters**

| Name          | Type    | Required | Description |
| ------------- | ------- | -------- | ----------- |
| `business_id` | integer | Yes      | —           |
| `extra_id`    | integer | Yes      | —           |
| `option_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/business/POST/business/{business_id}/extras/{extra_id}/options/{option_id}/metafields)