AI-generated Key Takeaways
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          RequiredCollectionError is a type of ApiError that indicates an error related to required collections. 
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          This error type has a reasonfield which specifies the nature of the error, including if the collection is required, too large, too small, or unknown.
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          RequiredCollectionError inherits fields like fieldPathandtriggerfrom the ApiError class.
- Namespace
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               https://www.google.com/apis/ads/publisher/v202502
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| ApiError(inherited) | |
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| RequiredCollectionError | |
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 Enumerations 
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