Because we cannot know the value of customer service level ( csl ) , stock management plan has some defect and the csl of group cannot come up to our request . raising csl is in contradiction with letting down stocks . but ascertaining the request of csl , we can make scientific stock management plan according to the model of stock that we have constructed in order to getting the most reasonable quantity of procurement and safety quantity of stock 库存计划管理是物流管理的重要部分，提高客户服务水平指标( csl指标)与降低库存量是相互矛盾的，在明确了csl指标要求后，可以按照所建立的库存模型制定科学的库存管理计划，以便找出最合理的订货点和安全库存量。
