AI-generated Key Takeaways
- 
          The page lists various Ad Manager API services with links to their ApplicationException. 
- 
          The DaiAuthenticationKeyServiceis highlighted among the listed services.
- 
          The page shows the inheritance relationship where ApiExceptionis the base class for exceptions andApplicationExceptioninherits from it.
- 
          The ApplicationExceptionhas amessagefield of typexsd:stringthat provides an error message.
Base class for exceptions.
- Namespace
- 
               https://www.google.com/apis/ads/publisher/v202508
| Field | |
|---|---|
| 
                            | 
                            Error message. |