AI-generated Key Takeaways
- 
          The document lists various Ad Manager API services available in version v202411. 
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          It provides details on the inheritance of errors, specifically focusing on NotNullError.
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          The NotNullErrorhas areasonfield which indicates the cause of the null value.
- Namespace
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               https://www.google.com/apis/ads/publisher/v202411
| Field | |
|---|---|
| ApiError(inherited) | |
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| NotNullError | |
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 Enumerations 
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