# Item description

Source: https://developer.avalara.com/avatax-dm-combined-erp/sales-tax-badge/transactions/cert-item-description/

# Item description

**Element type: Required**

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

Your UI must include a method for allowing users to specify an item description that is passed to AvaTax at the line level. Items descriptions are specified using the`description` field on the [LineItemModel](https://developer.avalara.com/api-reference/avatax/rest/v2/models/LineItemModel/).

This field should be optional for users. If a user does not provide a`description`, the AvaTax API will pull the description specified in the [ItemModel API](https://developer.avalara.com/api-reference/avatax/rest/v2/models/ItemModel/).

For SST, the description (whether entered by the user or pulled in from the [ItemModel API](https://developer.avalara.com/api-reference/avatax/rest/v2/models/ItemModel/)), must be a human readable description.

```
{  "lines": [    {      "number": "1",      "quantity": 1,      "amount": 100,      "taxCode": "PS081282",      "itemCode": "Y0001",      "description": "Yarn"    }  ],  ...}
```

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