AI-generated Key Takeaways
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The YieldGroupService contains error information for exceeding entity children limits.
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This error type, EntityChildrenLimitReachedError, inherits from ApiError and includes fields like fieldPath, trigger, and errorString.
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The specific reason for the entity children limit being reached is provided through the
reasonfield, which is an enumeration listing various limit types. 
- Namespace
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https://www.google.com/apis/ads/publisher/v202508 
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                           ApiError (inherited)
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                           EntityChildrenLimitReachedError
                        
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 Enumerations 
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