AI-generated Key Takeaways
- 
          Mobile application targeting errors can occur when an application is not linked to a store entry. 
- 
          The UNKNOWNenumeration value is returned when the actual value is not exposed by the requested API version.
- 
          The ApiErrorReasonenum is used for user domain targeting errors in thehttps://www.google.com/apis/ads/publisher/v202508namespace.
            ApiErrorReason enum for user domain targeting error.
- Namespace
- 
               https://www.google.com/apis/ads/publisher/v202508
| Enumeration | Description | 
|---|---|
| CANNOT_TARGET_UNLINKED_APPLICATION | Only applications that are linked to a store entry may be targeted. | 
| UNKNOWN | The value returned if the actual value is not exposed by the requested API version. |