of each supplier, thereby quantifying supply uncertainty. . Service level iran number whatsapp requirements Service level refers to the probability that when demand arises, the existing inventory can be used to meet demand. The higher the service level, the lower the safety stock, the lower the service level. Imagine, if consumers come to the store to consume, if they do not have any goods, consumers may complain, so it is necessary to allocate more safety stock. Goods, in some days it is also acceptable to pick up the goods later, so there is no need to allocate more safety stock, because there is still time to replenish and adjust the goods.
Service levels are different in cases where customer needs can be met immediately and cases where customer needs can be met immediately. But we do not use probability to represent service level directly, but the Z value. The Z value represents the number of standard deviations away from the axis of the normal distribution of demand. For example, in the figure below, if you put the standard deviation of safety stock, the service level from .When you keep an additional standard deviation of safety stock, the service level will increase to . ; ; If you keep another standard deviation of safety stock, the service level will increase to .
