AI-generated Key Takeaways
- 
          A CustomField is an additional, user-created field on an entity within the CustomFieldService. 
- 
          Key attributes of a CustomField include a unique readonly ID, a required name with a max length of 127 characters, an optional description with a max length of 511 characters, and a readonly isActive status. 
- 
          CustomFields are associated with a specific entity type (e.g., LINE_ITEM, ORDER, CREATIVE) and have a data type (e.g., STRING, NUMBER, TOGGLE, DROP_DOWN), both of which are read-only if a CustomFieldValue exists. 
- 
          The visibility of a CustomField in the UI can be API_ONLY, READ_ONLY, or FULL. 
An additional, user-created field on an entity.
- Namespace
- 
               https://www.google.com/apis/ads/publisher/v202411
| Field | |
|---|---|
| 
                            | 
                            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 
 |