AI-generated Key Takeaways
- 
          The document outlines various services including AdRuleService, AdjustmentService, and CustomTargetingService, among others. 
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          It details the inheritance of CustomTargetingError from ApiError, listing inherited fields like fieldPath and trigger. 
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          The document specifically defines the CustomTargetingError and lists its various possible reasons as enumerations, such as KEY_NOT_FOUND and VALUE_NOT_FOUND. 
- Namespace
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               https://www.google.com/apis/ads/publisher/v202505
| Field | |
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| ApiError(inherited) | |
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| CustomTargetingError | |
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 Enumerations 
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