AI-generated Key Takeaways
- 
          LineItemActivityAssociationErrorlists reasons for errors when associating activities with line items.
- 
          The activity must belong to the same advertiser as the line item to be associated. 
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          Only line items with CostType.CPAcan have activities associated with them.
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          The UNKNOWNvalue is returned for reasons not exposed in the requested API version.
The reasons for the target error.
- Namespace
- 
               https://www.google.com/apis/ads/publisher/v202508
| Enumeration | Description | 
|---|---|
| INVALID_ACTIVITY_FOR_ADVERTISER | When associating an activity to a line item the activity must belong to the same advertiser as the line item. | 
| INVALID_COST_TYPE_FOR_ASSOCIATION | Activities can only be associated with line items of CostType.CPA. | 
| UNKNOWN | The value returned if the actual value is not exposed by the requested API version. |