# ParameterType

- [JSON representation](https://developers.google.com/ads-data-hub/marketers/reference/rest/v1/ParameterType#SCHEMA_REPRESENTATION)

Information about a specific query parameter.

| JSON representation |
|---|
| ``` { "type": { object (`https://developers.google.com/ads-data-hub/marketers/reference/rest/v1/FieldType`) }, "description": string, "defaultValue": { object (`https://developers.google.com/ads-data-hub/marketers/reference/rest/v1/ParameterValue`) } } ``` |

| Fields ||
|---|---|
| `type` | ``object (`https://developers.google.com/ads-data-hub/marketers/reference/rest/v1/FieldType`)`` Parameter field type. |
| `description` | `string` Optional. Parameter description. |
| `defaultValue` | ``object (`https://developers.google.com/ads-data-hub/marketers/reference/rest/v1/ParameterValue`)`` Optional. Value that should be used if no parameter value is provided. |