AI-generated Key Takeaways
- 
          RequiredSizeError.Reason is an enumeration within the PublisherQueryLanguageService with three possible values: REQUIRED,NOT_ALLOWED, andUNKNOWN.
- 
          The REQUIREDreason indicates that a size is missing for either Creative or LineItem creative placeholders.
- 
          The NOT_ALLOWEDreason signifies that the sizes specified in a LineItemCreativeAssociation are not a subset of the sizes defined in the associated LineItem's creative placeholders.
- 
          The UNKNOWNreason is returned when the actual value of the error is not exposed in the requested API version.
- Namespace
- 
               https://www.google.com/apis/ads/publisher/v202508
| Enumeration | Description | 
|---|---|
| REQUIRED | Creative.size or LineItem.creativePlaceholders size is missing. | 
| NOT_ALLOWED | LineItemCreativeAssociation.sizes must be a subset of LineItem.creativePlaceholders sizes. | 
| UNKNOWN | The value returned if the actual value is not exposed by the requested API version. |