# Shipping method

Source: https://developer.avalara.com/products/crossborder/integration-guides/avatax-for-cdit/mtl7682277183172/

Guide: AvaTax Cross-Border (Customs Duty and Import Tax)

# Shipping method

Understand the required shipping method parameter for transactions, including its structure and usage.

**Element type: Required**

**Endpoints used:** [TransactionParameterModel](https://developer.avalara.com/api-reference/avatax/rest/v2/models/TransactionParameterModel/), [TransactionLineParameterModel](https://developer.avalara.com/api-reference/avatax/rest/v2/models/TransactionLineParameterModel/)

Your integration must include the shipping method associated with the product or purchase in a transaction. Shipping values include the country/region, shipping service, and shipping price. This is done using the `Shipping` parameter at either the line level or at the document level.

**Example**

```
 "parameters":[
    {
        "name": "Shipping",
        "value": "US:CA:Express:3.80 USD"
    }
]
```