AI-generated Key Takeaways
- 
          
The document provides a list of various Ad Manager API services, each linked to its
FeatureError.Reasonreference. - 
          
It details the
FeatureError.Reasonenumeration, which explains why a feature error might occur, includingMISSING_FEATUREandUNKNOWN. - 
          
The
FeatureError.Reasonenumeration indicates if a feature is not enabled on the current network or if the value is not exposed by the requested API version. 
- Namespace
 - 
               
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. |