How to Understand Warehouse Numbers in SAP ERP for EWM

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Executive Summary

Warehouse numbers are used with SAP ERP ECC.
SAP APO warehouse numbers can be assigned to ECC warehouse numbers and storage facilities.

Introduction to Warehouse Numbers

Warehouse numbers are discussed in terms of setting up EWM in the post in the article. You will learn how warehouse numbers are managed in SAP.

What Are Warehouse Numbers?

Warehouse numbers are a functioning part of SAP ERP. For instance, when creating a material, you have the option of assigning it to a warehouse number.

Creating Warehouse Numbers in ECC

The warehouse numbers are created within the IMG, as you can see below.

This takes you to this screen where the Warehouse Numbers can be defined.

You can then create your warehouse numbers.

Assigning SAP ERP Warehouse Numbers to SCM Warehouse Numbers

Within the ECC IMG, there is a configuration area related to assigning warehouse numbers to SCM.

Here you can see the list of warehouses. Only one in the list below is assigned to a WHN.Dec, or an SCM warehouse number. However, it is interesting to note that when entering the WHN.DecS value, there is no dropdown.

This means that there is no check on the values that are entered. If they are incorrect, there will be a problem bringing over transaction data from ECC to EWM.

Assigning Warehouse Numbers in ECC to Plants and Storage Facilities in ECC

A second item in the IMG allows you to assign a warehouse number to a plant or storage facility.

However, this is internal. That is, this assigns the ECC warehouse number to the plant or storage location in ECC.

Storage Type

As for the storage type, we have tried to make the same storage types of ECC as for EWM. Here are our EWM storage types.

Therefore we try to duplicate the storage types in SAP ERP. However, storage types are 4 characters in EWM and 3 characters in SAP ERP.

Having done those things, we can now return to creating our material and having the warehouse and storage type ready for input.

After this is created, we will want to make an identical Plant or Lotion over in SCM.

Then this screen comes.