促销对订单的影响信息，如果用在订单层面，表示促销活动对整单的影响，如果用来订单商品层面，表示促销活动对单行订单商品的影响(促销对订单的影响信息，如果用在订单层面，表示促销活动对整单的影响，如果用来订单商品层面，表示促销活动对单行订单商品的影响)

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