AI-generated Key Takeaways
- 
          A CustomField is a user-created field on an entity. 
- 
          CustomFields have attributes including a unique ID, name, description, activity status, entity type, data type, and visibility. 
- 
          CustomFields are associated with various entity types such as LineItem, Order, Creative, Proposal, and ProposalLineItem. 
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          The data type of a CustomField can be a string, number, toggle, or drop-down. 
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          CustomField visibility can be API only, read-only, or full access in the UI. 
An additional, user-created field on an entity.
- Namespace
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               https://www.google.com/apis/ads/publisher/v202502
| 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 
 |