AI-generated Key Takeaways
- 
          AuthenticationError represents an error that occurs during the authentication process for various services including AdRuleService, AdjustmentService, and AdsTxtService. 
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          This error inherits properties from ApiError such as fieldPath and trigger, indicating where and why the error occurred. 
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          The AuthenticationError includes a specific reason field with various enumerated values explaining the authentication failure, such as INVALID_EMAIL, AUTHENTICATION_FAILED, or MISSING_AUTHENTICATION. 
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          Potential reasons for an AuthenticationError range from ambiguous or missing authentication headers to invalid credentials or network access issues. 
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          The Namespace associated with this error is https://www.google.com/apis/ads/publisher/v202502.
An error for an exception that occurred when authenticating.
- Namespace
- 
               https://www.google.com/apis/ads/publisher/v202502
| 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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