AI-generated Key Takeaways
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The content lists various Ad Manager API services with links to their AuthenticationError documentation for version v202508.
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It details the inheritance hierarchy for
AuthenticationError, showing it inherits fromApiError. - 
          
The
AuthenticationErrorincludes fields likefieldPath,fieldPathElements,trigger, anderrorStringinherited fromApiError. - 
          
The
AuthenticationErrorspecifically has areasonfield which is an enumeration listing various authentication failure causes. 
- Namespace
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https://www.google.com/apis/ads/publisher/v202508 
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                           ApiError (inherited)
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                           AuthenticationError
                        
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 Enumerations 
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