[[["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complicated / too many steps","tooComplicatedTooManySteps","thumb-down"],["Out of date","outOfDate","thumb-down"],["Samples / code issue","samplesCodeIssue","thumb-down"],["Other","otherDown","thumb-down"]],["Last updated 2025-08-06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 document details `ClickTrackingLineItemError` reasons within ad management services. Key information includes the namespace (`https://www.google.com/apis/ads/publisher/v202502`) and error enumeration types. These errors arise from actions like attempting to change immutable line item types (`TYPE_IMMUTABLE`), targeting invalid inventory (`INVALID_TARGETING_TYPE`), using incompatible creative rotation (`INVALID_CREATIVEROTATION_TYPE`), unsupported fields(`UNSUPPORTED_FIELD`), or having invalid delivery rate (`INVALID_DELIVERY_RATE_TYPE`) and roadblock types (`INVALID_ROADBLOCKING_TYPE`). `UNKNOWN` signifies an unexposed value. Services included are `ForecastService`, `LineItemService`, `LineItemTemplateService`, and `OrderService`.\n"],null,["# enum ClickTrackingLineItemError.Reason (v202502)\n\n**Service** \n[ForecastService](/ad-manager/api/reference/v202502/ForecastService.ClickTrackingLineItemError.Reason) **LineItemService** [LineItemTemplateService](/ad-manager/api/reference/v202502/LineItemTemplateService.ClickTrackingLineItemError.Reason) [OrderService](/ad-manager/api/reference/v202502/OrderService.ClickTrackingLineItemError.Reason) **Dependencies** \n[ClickTrackingLineItemError](/ad-manager/api/reference/v202502/LineItemService.ClickTrackingLineItemError) \n▼\n**ClickTrackingLineItemError....**\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| `TYPE_IMMUTABLE` | The line item type cannot be changed once created. |\n| `INVALID_TARGETING_TYPE` | Click tracking line items can only be targeted at ad unit inventory, all other types are invalid, as well as placements. |\n| `INVALID_ROADBLOCKING_TYPE` | Click tracking line items do not allow us to control creative delivery so are by nature one or more as entered by the third party. |\n| `INVALID_CREATIVEROTATION_TYPE` | Click tracking line items do not support the [CreativeRotationType.OPTIMIZED](/ad-manager/api/reference/v202502/LineItemService.CreativeRotationType#OPTIMIZED) creative rotation type. |\n| `INVALID_DELIVERY_RATE_TYPE` | Click tracking line items do not allow us to control line item delivery so we can not control the rate at which they are served. |\n| `UNSUPPORTED_FIELD` | Not all fields are supported by the click tracking line items. |\n| `UNKNOWN` | The value returned if the actual value is not exposed by the requested API version. |"]]
