AI-generated Key Takeaways
- 
          The DropDownCustomFieldValue is a type of CustomFieldValue used for CustomFields with a data type of DROP_DOWN. 
- 
          It inherits from BaseCustomFieldValue. 
- 
          The DropDownCustomFieldValue has a customFieldOptionId field, while the inherited BaseCustomFieldValue has a customFieldId field. 
A CustomFieldValue for a CustomField that has a CustomField.dataType of CustomFieldDataType.DROP_DOWN
- Namespace
- 
               https://www.google.com/apis/ads/publisher/v202508
| Field | |
|---|---|
| BaseCustomFieldValue(inherited) | |
| 
                            | 
                            Id of the  | 
| DropDownCustomFieldValue | |
| 
                            | 
                            The ID of the CustomFieldOption for this value. |