[[["容易理解","easyToUnderstand","thumb-up"],["確實解決了我的問題","solvedMyProblem","thumb-up"],["其他","otherUp","thumb-up"]],[["缺少我需要的資訊","missingTheInformationINeed","thumb-down"],["過於複雜/步驟過多","tooComplicatedTooManySteps","thumb-down"],["過時","outOfDate","thumb-down"],["翻譯問題","translationIssue","thumb-down"],["示例/程式碼問題","samplesCodeIssue","thumb-down"],["其他","otherDown","thumb-down"]],["上次更新時間：2025-09-09 (世界標準時間)。"],[[["\u003cp\u003eOptimized Targeting settings allow you to control audience expansion for your line items, influencing the reach of your campaigns.\u003c/p\u003e\n"],["\u003cp\u003eOptimized Targeting is not compatible with all bidding strategies, particularly those focused on maximizing spend or viewable CPM.\u003c/p\u003e\n"],["\u003cp\u003eAudience expansion levels, ranging from no reach to most reach, determine how broadly your first-party user lists are expanded to find new, relevant audiences.\u003c/p\u003e\n"],["\u003cp\u003eThese settings primarily impact YouTube and Partners line items and ad groups, providing control over audience targeting on those platforms.\u003c/p\u003e\n"],["\u003cp\u003eWhile \u003ccode\u003eenableOptimizedTargeting\u003c/code\u003e is required for setup, \u003ccode\u003eaudienceExpansionSeedListExcluded\u003c/code\u003e and \u003ccode\u003eaudienceExpansionLevel\u003c/code\u003e are output only, reflecting system-determined values.\u003c/p\u003e\n"]]],[],null,["| Display \\& Video 360 API v3 is deprecated and will sunset on **October 7, 2025** . Migrate to [Display \\& Video 360 API v4](/display-video/api/reference/rest/v4) before sunset to avoid an interruption in service.\n- [JSON representation](#SCHEMA_REPRESENTATION)\n- [AudienceExpansionLevel](#AudienceExpansionLevel)\n\nSettings that control the [optimized targeting](//support.google.com/displayvideo/answer/12060859) settings of the line item.\n\n| JSON representation |\n|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|\n| ``` { \"enableOptimizedTargeting\": boolean, \"audienceExpansionSeedListExcluded\": boolean, \"audienceExpansionLevel\": enum (/display-video/api/reference/rest/v3/TargetingExpansionConfig#AudienceExpansionLevel) } ``` |\n\n| Fields ||\n|-------------------------------------|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|\n| `enableOptimizedTargeting` | `boolean` Required. Whether to enable Optimized Targeting for the line item. Optimized targeting is not compatible with all bid strategies. Attempting to set this field to `true` for a line item using the [BiddingStrategy](/display-video/api/reference/rest/v3/BiddingStrategy) field [fixedBid](/display-video/api/reference/rest/v3/BiddingStrategy#FIELDS.fixed_bid) or one of the following combinations of [BiddingStrategy](/display-video/api/reference/rest/v3/BiddingStrategy) fields and [BiddingStrategyPerformanceGoalType](/display-video/api/reference/rest/v3/BiddingStrategy#BiddingStrategyPerformanceGoalType) will result in an error: [maximize_auto_spend_bid](/display-video/api/reference/rest/v3/BiddingStrategy#FIELDS.maximize_spend_auto_bid): - `BIDDING_STRATEGY_PERFORMANCE_GOAL_TYPE_CIVA` - `BIDDING_STRATEGY_PERFORMANCE_GOAL_TYPE_IVO_TEN` - `BIDDING_STRATEGY_PERFORMANCE_GOAL_TYPE_AV_VIEWED` [performanceGoalAutoBid](/display-video/api/reference/rest/v3/BiddingStrategy#FIELDS.performance_goal_auto_bid): - `BIDDING_STRATEGY_PERFORMANCE_GOAL_TYPE_VIEWABLE_CPM` |\n| `audienceExpansionSeedListExcluded` | `boolean` Output only. Whether to exclude seed list for audience expansion. This field only applies to YouTube and Partners line item and ad group resources. |\n| `audienceExpansionLevel` | `enum (`[AudienceExpansionLevel](/display-video/api/reference/rest/v3/TargetingExpansionConfig#AudienceExpansionLevel)`)` Output only. Magnitude of expansion for eligible first-party user lists under this ad group. This field only applies to YouTube and Partners line item and ad group resources. |\n\nAudienceExpansionLevel Qualitative description of audience expansion level.\n\n| Enums ||\n|---------------|--------------------------------------------------------------------------|\n| `UNKNOWN` | Audience expansion level is not specified or is unknown in this version. |\n| `NO_REACH` | Audience expansion off. |\n| `LEAST_REACH` | Conservative audience expansion. |\n| `MID_REACH` | Moderate audience expansion. |\n| `MOST_REACH` | Aggressive audience expansion. |"]]
