Relationship of R/3 Shipping to WM 
When an R/3 Shipping component is connected to the R/2 host in conjunction with an R/3 Warehouse Management system, all deliveries are processed in WM in exactly the same manner as in the integrated system. For complete information about this topic, see
Goods Issues Based on a Delivery.General Process
In the R/2 system you create material master records and delivery documents based on sales orders or scheduling agreements.
To post goods issues for deliveries WM supports the random picking technique.
For more information about the random picking technique, see
Example: Creating a Transfer Order in WM without a Previous Posting in IM.