尊敬的卖家：
您好！现将亚马逊广告归因规则的重要调整事项向您说明，本次调整将于2026年1月1日起正式生效，将直接影响相关广告的效果统计（包括购买、销售额、转化率、ROAS、ACOS等指标）表现，请您重点关注。
1. 核心调整内容
本次调整聚焦于按展示计费广告的归因窗口期，核心变化如下：
View-based ads（按展示计费广告）：归因期由原14天缩短至1天，具体覆盖以下广告类型：
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SB & SD：按可展示曝光（vCPM）计费的广告活动，包含品牌关键词广告活动；
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DSP：投放于Amazon站内广告位的广告活动。
(说明：Click计费广告归因期保持不变，不受本次调整影响）
本次更新仅适用于2026年1月1日及之后产生的流量，不追溯调整历史数据。
2. 调整的影响
本次调整将自动完成，调整后，因按展示计费广告的归因窗口期从 14 天缩短至 1 天，符合归因条件的转化数据范围相应收窄，因此该类广告的销售额、转化率及 ROAS、ACOS等指标均会产生波动。
3. 亚马逊官方调整说明
亚马逊官方调整说明如下：
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