[[["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complicated / too many steps","tooComplicatedTooManySteps","thumb-down"],["Out of date","outOfDate","thumb-down"],["Samples / code issue","samplesCodeIssue","thumb-down"],["Other","otherDown","thumb-down"]],["Last updated 2025-08-06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 `ClickTrackingLineItemError` and its associated reasons within the Google Ad Manager API's v202502 version. It details the error's namespace and lists seven distinct enumeration reasons. These reasons explain restrictions on click tracking line items, including immutability of type, limitations on targeting (ad unit inventory only), roadblocks, creative rotation types, delivery rate types, unsupported fields, and an unknown value catch-all. Services interacting with these errors 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](/ad-manager/api/reference/v202502/LineItemService.ClickTrackingLineItemError.Reason) [LineItemTemplateService](/ad-manager/api/reference/v202502/LineItemTemplateService.ClickTrackingLineItemError.Reason) **OrderService** **Dependencies** \n[ClickTrackingLineItemError](/ad-manager/api/reference/v202502/OrderService.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/ForecastService.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. |"]]
