**Service** **CustomFieldService** **Dependencies** [CustomField](https://developers.google.com/ad-manager/api/reference/v202605/CustomFieldService.CustomField) ▼ **CustomFieldDataType**

The data types allowed for [CustomField](https://developers.google.com/ad-manager/api/reference/v202605/CustomFieldService.CustomField) objects.

*** ** * ** ***

Namespace
:
    `https://www.google.com/apis/ads/publisher/v202605`

| Enumeration | Description |
|---|---|
| `STRING` | A string field. The max length is 255 characters. |
| `NUMBER` | A number field. |
| `TOGGLE` | A boolean field. Values may be "true", "false", or empty. |
| `DROP_DOWN` | A drop-down field. Values may only be the ids of [CustomFieldOption](https://developers.google.com/ad-manager/api/reference/v202605/CustomFieldService.CustomFieldOption) objects. |
| `UNKNOWN` | The value returned if the actual value is not exposed by the requested API version. |