AI-generated Key Takeaways
- 
          A CustomFieldOption represents a permitted value for a drop-down custom field. 
- 
          Each CustomFieldOption has a unique ID, a reference to its custom field, and a display name. 
- 
          CustomFieldOptions are associated with the CustomFieldService and can be created, retrieved, and updated using specific methods. 
An option represents a permitted value for a custom field that has a CustomField.dataType of CustomFieldDataType.DROP_DOWN.
- Namespace
- 
               https://www.google.com/apis/ads/publisher/v202508
| Field | |
|---|---|
| 
                            | 
                            Unique ID of this option. This value is readonly and is assigned by Google. | 
| 
                            | 
                            The id of the custom field this option belongs to. | 
| 
                            | 
                            The display name of this option. |