AI-generated Key Takeaways
- 
          The content lists various Ad Manager API services with links to their FeatureError reason documentation. 
- 
          The FeatureError.Reasonenumeration defines possible reasons for a FeatureError, includingMISSING_FEATUREandUNKNOWN.
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          The MISSING_FEATUREreason indicates a feature not enabled on the current network.
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          The UNKNOWNreason is used when the actual value is not exposed by the requested API version.
- Namespace
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               https://www.google.com/apis/ads/publisher/v202508
| Enumeration | Description | 
|---|---|
| MISSING_FEATURE | A feature is being used that is not enabled on the current network. | 
| UNKNOWN | The value returned if the actual value is not exposed by the requested API version. |