> For the complete documentation index, see [llms.txt](https://developer.esw.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://developer.esw.com/package-management/package-management-api/core-concepts/dangerous-goods.md).

# Dangerous goods

{% hint style="info" icon="circle-radiation" %}
Send dangerous-goods details when a package contains regulated items.
{% endhint %}

Use `dangerousGoodsInfo` in a create request to describe dangerous goods for the package.

### Package-level declaration

| Field                              | Type      | Description                                             |
| ---------------------------------- | --------- | ------------------------------------------------------- |
| `dangerousGoods`                   | `boolean` | Indicates whether the package contains dangerous goods. |
| `dangerousGoodsClassificationCode` | `string`  | Dangerous-goods classification code.                    |
| `dangerousGoodsUnNumber`           | `string`  | United Nations number for the goods.                    |
| `dangerousGoodsContentId`          | `string`  | Identifier for the dangerous-goods content.             |

The schema does not require any of these fields. Provide the values required for your shipment and carrier flow.

### Item-level declaration

Each entry in `packageItems` also supports a `dangerousGoods` boolean. Set it to `true` for each affected item.

Package responses expose a package-level `dangerousGoods` boolean. Use it to identify packages containing dangerous goods.


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