AI-generated Key Takeaways
- 
          DropDownCustomField is a type of custom field within the CustomFieldService that uses the drop-down data type. 
- 
          It inherits attributes from the CustomField, including unique ID, name, description, active status, entity type, data type, and visibility. 
- 
          The DropDownCustomField specifically includes an "options" field which lists the allowed CustomFieldOption values, and this field is read-only. 
A custom field that has the drop-down data type.
- Namespace
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               https://www.google.com/apis/ads/publisher/v202508
| Field | |
|---|---|
| CustomField(inherited) | |
| 
                            | 
                            Unique ID of the  | 
| 
                            | 
                            Name of the  | 
| 
                            | 
                            A description of the custom field. This value is optional. The maximum length is 511 characters | 
| 
                            | 
                            Specifies whether or not the custom fields is active. This attribute is read-only. | 
| 
                            | The type of entity that this custom field is associated with. This attribute is read-only if there exists a CustomFieldValue for this field. Enumerations 
 | 
| 
                            | The type of data this custom field contains. This attribute is read-only if there exists a CustomFieldValue for this field. Enumerations 
 | 
| 
                            | How visible/accessible this field is in the UI. Enumerations 
 | 
| DropDownCustomField | |
| 
                            | The options allowed for this custom field. This is read only. |