为什么主单位必须设置为最小单位？

Last modified on 2026-05-20

对于多单位商品，如果主单位是大单位（如箱），经过单位换算后，库存可能出现无限小数，导致数据不准确。

举个例子：

设置主单位为“箱”，辅单位为“包”，换算率：1箱 = 6包
进货2包，系统需要将数量存为主单位“箱”：2 ÷ 6 = 0.3333… 箱
当您切回“包”查看库存时：0.3333… × 6 = 1.98 包，与实际进货的2包存在误差

因此，系统要求主单位必须为最小单位（如个、瓶），确保库存计算精准。

多单位设置示例

Kingdee Ailit is an inventory management brand under Kingdee Group. It provides free inventory management, warehouse management, entry and exit management, cash register system, and other functions. It is suitable for wholesale and retail industries such as clothing and food, supporting membership management and multi-store collaboration. More than 3 million merchants have upgraded from manual accounting to digital management through Ailit.