Complex Loading and
Unloading 
Purpose
In the case of
complex loading and unloading processes, you create warehouse tasks (WTs) and
move the products into or out of the warehouse. Complex loading and unloading
processes are based on the 
storage control settings
that the system uses to determine the destination storage bin for a WT.
Complex loading and unloading processes run in the same way as any other WT
processing when warehouse orders are
created. For this reason, the following describes only the special
features of these two processes.
Prerequisites
Process
Loading
When you confirm an internal WT within the warehouse, the system can automatically create the next WTs on the basis of storage control. The latter WT is called the loading WT.
You can also manually create and confirm this loading WT. To do this, on the SAP Easy Access screen, choose Extended Warehouse Management ® Goods Receipt and Shipping ® Load. Alternatively, the creation of the loading WT can be triggered automatically by a status change when the TU arrives at the door. This occurs via a PPF action (PPF = Post Processing Framework).
The system creates
loading WTs with the default destination storage bin Door. If a WT is confirmed at a door where a
TU is positioned, the system automatically changes the destination storage bin
in the WT to TU. Ad hoc movements are the
exception to this rule.
You can use loading rules to influence the time of loading. In this way, you can specify, for example, that loading is not to start until 24 hours after you have confirmed the WT with the destination storage bin Staging Bay. You choose loading rules when defining staging areas.
Unloading
The unloading process runs in the same way. Here, however, the system posts goods issue at the latest after the unloading WT has been confirmed.