AI-generated Key Takeaways
- 
          NotNullError is a type of ApiError in the SegmentPopulationService namespace. 
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          It is located within the https://www.google.com/apis/ads/publisher/v202411namespace.
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          The NotNullError has a reasonfield with several possible enumeration values likeARG1_NULL,ARG2_NULL,ARG3_NULL,NULL, andUNKNOWN.
- Namespace
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               https://www.google.com/apis/ads/publisher/v202411
| Field | |
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| ApiError(inherited) | |
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| NotNullError | |
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 Enumerations 
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