# ListClassificationParametersUsage

Retrieve the full list of Avalara-supported usage of extra parameters for classification of a item.

`GET /api/v2/definitions/classification/parametersusage`

**API:** AvaTax API
**Tag:** Definitions
**API Version:** v2
**Base URL:** https://sandbox-rest.avatax.com/
**Accepts:** `application/json`
**Authentication:** API Key (`Authorization` in header) or OAuth 2.0 or Basic (username + license key)

Source: https://developer.avalara.com/products/avatax/api/methods/Definitions/ListClassificationParametersUsage/

## Description

Returns the full list of Avalara-supported usage of extra parameters for item classification.
The list of parameters is available for use with Item Classification.
Some parameters are only available for use if you have subscribed to certain features of AvaTax.

## Parameters

| Name | Type | In | Required | Description |
|---|---|---|---|---|
| `$filter` | string | query | No | A filter statement to identify specific records to retrieve.  For more information on filtering, see [Filtering in REST](http://developer.avalara.com/avatax/filtering-in-rest/).*Not filterable:* attributeSubType, values |
| `$top` | integer | query | No | If nonzero, return no more than this number of results.  Used with `$skip` to provide pagination for large datasets.  Unless otherwise specified, the maximum number of records that can be returned from an API call is 1,000 records. |
| `$skip` | integer | query | No | If nonzero, skip this number of results before returning data.  Used with `$top` to provide pagination for large datasets. |
| `$orderBy` | string | query | No | A comma separated list of sort statements in the format `(fieldname) [ASC|DESC]`, for example `id ASC`. |
| `X-Avalara-Client` | string | header | No | Identifies the software you are using to call this API.  For more information on the client header, see [Client Headers](https://developer.avalara.com/avatax/client-headers/) . |

## Responses

| Status | Description | Schema |
|---|---|---|
| 200 | Success | `ClassificationParameterUsageMapModelFetchResult` |

### 200 Response: `ClassificationParameterUsageMapModelFetchResult`

| Property | Type | Required | Description |
|---|---|---|---|
| `@recordsetCount` | integer | No |  |
| `value` | ClassificationParameterUsageMapModel[] | No |  |
| `@nextLink` | string | No |  |
| `pageKey` | string | No |  |

## Example Request

```bash
curl -X GET "https://sandbox-rest.avatax.com/api/v2/definitions/classification/parametersusage" \
  -H "Authorization: Basic <credentials>" \
  -H "Accept: application/json"
```