[[["Easy to understand","easyToUnderstand","thumb-up"],["Solved my problem","solvedMyProblem","thumb-up"],["Other","otherUp","thumb-up"]],[["Missing the information I need","missingTheInformationINeed","thumb-down"],["Too complicated / too many steps","tooComplicatedTooManySteps","thumb-down"],["Out of date","outOfDate","thumb-down"],["Samples / code issue","samplesCodeIssue","thumb-down"],["Other","otherDown","thumb-down"]],["Last updated 2025-08-06 UTC."],[],["The provided content outlines the `LineItemActivityAssociationError` reasons within the `ForecastService`, `LineItemService`, `LineItemTemplateService`, and `OrderService`. Key errors include `INVALID_ACTIVITY_FOR_ADVERTISER`, indicating activity-line item advertiser mismatch, and `INVALID_COST_TYPE_FOR_ASSOCIATION`, meaning activities can only link to `CostType.CPA` line items. Additionally, `UNKNOWN` represents an unexposed value for a specific API version. The namespace for these services is `https://www.google.com/apis/ads/publisher/v202502`.\n"],null,["# enum LineItemActivityAssociationError.Reason (v202502)\n\n**Service** \n**ForecastService** [LineItemService](/ad-manager/api/reference/v202502/LineItemService.LineItemActivityAssociationError.Reason) [LineItemTemplateService](/ad-manager/api/reference/v202502/LineItemTemplateService.LineItemActivityAssociationError.Reason) [OrderService](/ad-manager/api/reference/v202502/OrderService.LineItemActivityAssociationError.Reason) **Dependencies** \n[LineItemActivityAssociation...](/ad-manager/api/reference/v202502/ForecastService.LineItemActivityAssociationError \"LineItemActivityAssociationError\") \n▼\n**LineItemActivityAssociation...**\n\nThe reasons for the target error.\n\n*** ** * ** ***\n\nNamespace\n:\n `https://www.google.com/apis/ads/publisher/v202502`\n\n| Enumeration | Description |\n|-------------------------------------|---------------------------------------------------------------------------------------------------------------|\n| `INVALID_ACTIVITY_FOR_ADVERTISER` | When associating an activity to a line item the activity must belong to the same advertiser as the line item. |\n| `INVALID_COST_TYPE_FOR_ASSOCIATION` | Activities can only be associated with line items of `CostType.CPA`. |\n| `UNKNOWN` | The value returned if the actual value is not exposed by the requested API version. |"]]
