AI-generated Key Takeaways
- 
          The content lists various Ad Manager API services for the v202502 version, each linked to their AuthenticationError documentation. 
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          AuthenticationError, which is an inherited ApiError, includes fields such as fieldPath, fieldPathElements, trigger, and errorString. 
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          AuthenticationError also has a specific field called reasonthat provides a list of possible authentication failure causes.
- Namespace
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               https://www.google.com/apis/ads/publisher/v202502
| Field | |
|---|---|
| ApiError(inherited) | |
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| AuthenticationError | |
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 Enumerations 
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