AI-generated Key Takeaways
- 
          The page lists various services available in the Ad Manager API v202508, including AdRuleService, AdjustmentService, and many others related to advertising and content management. 
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          It details the AuthenticationError, which is an error indicating a problem during authentication, and provides reasons for such errors, including invalid credentials, missing headers, and network access issues.
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          The AuthenticationErrorinherits fromApiErrorand includes fields such asfieldPath,trigger, anderrorStringto help identify the cause of the error.
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          Specific reasons for authentication failure are enumerated, such as INVALID_EMAIL,AUTHENTICATION_FAILED,MISSING_AUTHENTICATION, andNETWORK_API_ACCESS_DISABLED.
An error for an exception that occurred when authenticating.
- Namespace
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               https://www.google.com/apis/ads/publisher/v202508
| Field | |
|---|---|
| ApiError(inherited) | |
| 
                            | 
                            The OGNL field path to identify cause of error. | 
| 
                            | A parsed copy of the field path. For example, the field path "operations[1].operand" corresponds to this list: {FieldPathElement(field = "operations", index = 1), FieldPathElement(field = "operand", index = null)}. | 
| 
                            | 
                            The data that caused the error. | 
| 
                            | 
                            A simple string representation of the error and reason. | 
| AuthenticationError | |
| 
                            | 
 Enumerations 
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