In the Warehouse Management System (WMS) you can develop your own putaway strategy using an SAP user exit.
You can use existing checks and updates from the following putaway strategies:
by combining the standard strategies with your own putaway strategy.
The SAP user exit MWMTO003 "Own putaway" is available for the WM area (putaway strategy).
Further user exits of the WMS are grouped together in the chapter "Tools - Develop user exits for Warehouse Management ".
User exits, in contrast to modifications, are
not affected by releases because they are not written in SAP original code but
in a name area that is reserved for the customer.
The general procedure for the creation of user exits is described in the user exit transaction under the menu path "Utilities - Online manual".
Each user exit is documented. You will find this documentation if you press the pushbutton "SAP doc." in the user exit transaction.