AI-generated Key Takeaways
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          The content provides details about the LabelEntityAssociationErrorin various services within the Google Ad Manager API.
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          This error indicates issues related to associating labels with entities, such as duplicate associations, invalid associations, or negation problems. 
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          Different enumeration values like DUPLICATE_ASSOCIATIONandINVALID_ASSOCIATIONspecify the exact reason for the error.
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          The UNKNOWNvalue is returned when the actual error reason is not available in the API version used.
The reasons for the target error.
- Namespace
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               https://www.google.com/apis/ads/publisher/v202508
| Enumeration | Description | 
|---|---|
| DUPLICATE_ASSOCIATION | The label has already been attached to the entity. | 
| INVALID_ASSOCIATION | A label is being applied to an entity that does not support that entity type. | 
| NEGATION_NOT_ALLOWED | Label negation cannot be applied to the entity type. | 
| DUPLICATE_ASSOCIATION_WITH_NEGATION | The same label is being applied and negated to the same entity. | 
| UNKNOWN | The value returned if the actual value is not exposed by the requested API version. |