AI-generated Key Takeaways
- 
          The page lists various Ad Manager API services for version v202502. 
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          It details inheritance relationships, specifically showing various error types inheriting from ApiError. 
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          The content includes information about the NullError type, its namespace, and its fields. 
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          Enumerations for the NullError reason are provided, including NOT_NULL and UNKNOWN. 
- Namespace
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               https://www.google.com/apis/ads/publisher/v202502
| Field | |
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| ApiError(inherited) | |
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| NullError | |
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 Enumerations 
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