EWM系統跟CRM系統與ERP系統之間的關係一樣。大部分的主數據例如工廠、物料、客戶、供應商等都是維護在ERP系統內的，但是這些數據在EWM中同樣需要的，其他的數據就需要在EWM中維護了，他們之間的主數據傳輸如下：
There are two distinct techniques used to transfer data between an ERP system
and EWM. Master data are transferred using the Core Interface (CIF) .
Plant, shipping point, customer master and vendor master are master data which
are used as well by ERP as by SCM in general. In SCM system these master data
are not identical with the ERP master data. During the transfer , the relevant ERP
master data are copied to the corresponding SCM data, the location master data.
Material master data from an ERP system is transferred to the product master
in the SCM system. The data that is transferred consists mainly of material
descriptions, units of measure, material product coding fields such as material
group, and weights/volume specifications. The product master data and location
master data are usable for all applications in the SCM system: they are used by
both the APO and EWM. In a following step, you can extend these product master
data with further , EWM specific information - this will extend the product to
a warehouse product.
In addition to the basic material master data, characteristics and batches for batch
managed materials must also be transferred.
T o transfer master data, a Core Interface (CIF) model must be defined in the ERP
system.
創建綜合模型
CFM1
選擇合適的主數據進行同步
When the CIF model is activated, the master data is transferred to the SCM/EWM
system. Plant, distribution centers, shipping point, customers and vendors are
copied as SCM location master data and are assigned a Location T ype.