> ## Documentation Index
> Fetch the complete documentation index at: https://terminal49-vorflux-dev-12120-supported-document-types.mintlify.site/llms.txt
> Use this file to discover all available pages before exploring further.

# Create a custom field option

> Add an enum option to a custom field definition in the Terminal49 API so users can select it when applying the custom field to shipments or containers.

Create a new option for an `enum` or `enum_multi` custom field definition.

## Path parameters

| Parameter       | Description                                          |
| --------------- | ---------------------------------------------------- |
| `definition_id` | The unique identifier of the custom field definition |

## Request body

| Parameter  | Required | Description                          |
| ---------- | -------- | ------------------------------------ |
| `label`    | Yes      | Display label shown to users         |
| `value`    | Yes      | Stored value (unique per definition) |
| `position` | No       | Sort order for the option            |

## Notes

Options can only be added to definitions with `data_type` of `enum` or `enum_multi`.