# abstract type BaseCustomFieldValue (v202602)

**Service** [CreativeService](https://developers.google.com/ad-manager/api/reference/v202602/CreativeService.BaseCustomFieldValue) [ForecastService](https://developers.google.com/ad-manager/api/reference/v202602/ForecastService.BaseCustomFieldValue) [LineItemService](https://developers.google.com/ad-manager/api/reference/v202602/LineItemService.BaseCustomFieldValue) **OrderService** [ProposalLineItemService](https://developers.google.com/ad-manager/api/reference/v202602/ProposalLineItemService.BaseCustomFieldValue) [ProposalService](https://developers.google.com/ad-manager/api/reference/v202602/ProposalService.BaseCustomFieldValue) **Dependencies** [Order](https://developers.google.com/ad-manager/api/reference/v202602/OrderService.Order) ▼ **BaseCustomFieldValue** **Inheritance** **BaseCustomFieldValue** ▼ [CustomFieldValue](https://developers.google.com/ad-manager/api/reference/v202602/OrderService.CustomFieldValue) [DropDownCustomFieldValue](https://developers.google.com/ad-manager/api/reference/v202602/OrderService.DropDownCustomFieldValue)

The value of a [CustomField](https://developers.google.com/ad-manager/api/reference/v202602/CustomFieldService.CustomField) for a particular entity.

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Namespace
:
    `https://www.google.com/apis/ads/publisher/v202602`

| ## Field ||
|---|---|
| ### `customFieldId` | ` xsd:long` Id of the `CustomField` to which this value belongs. This attribute is required. |