AI-generated Key Takeaways
- 
          The AuthenticationError occurs when there is an issue with the provided authentication information when interacting with Ad Manager API services. 
- 
          Common reasons for authentication errors include invalid login details, missing tokens, issues with OAuth signatures, and network access problems. 
- 
          The error details can provide information about the specific field path, triggering data, and a simple string representation of the error. 
- 
          The AuthenticationError inherits properties from ApiError, such as fieldPath, fieldPathElements, trigger, and errorString. 
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          Various specific reasons for AuthenticationError are enumerated, covering scenarios like ambiguous headers, invalid email, authentication failure, and network-related issues. 
An error for an exception that occurred when authenticating.
- Namespace
- 
               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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