# Net volume

Source: https://developer.avalara.com/avatax-for-bevalc/requirements/net-volume/

# Net volume

**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 provide a way to specify the volume of an item in a transaction, exclusive of the packaging, pack size, container, or other ancillary materials. This is done using the`NetVolume` parameter.  When specifying the net volume for beverage alcohol transactions, you must also include a`unit` with one of the following options:

-   `Litre`
-   `Millilitre`
-   `gallon`(US fluid)
-   `quart`(US fluid)
-   `ounce`(fluid US customary)

```
"lines": [  {    "parameters":[      {        "name":"NetVolume",        "value":"750",        "unit":"Millilitre"      }    ]  }]
```

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