Diagnosis
Within the respective document, an item was entered that containsmaterial &V1& and points to plant &V2& and storage location &V3&.
The system has determined warehouse number &V4& from the combinationplant / storage location &V1&/&V2&. "Lean WM" has been set inCustomizing for Warehouse Management in this warehouse.
This means that the picking area is derived from the warehouse segmentof the material master.
For the combination material/plant/storage location, the system hasattempted to read a warehoure segment to derive the picking area.Hoever, no entry was found in the respective table.

System Response
The workload data is updated with the initial value for the feature'planned picking area'.

Procedure
If the combination &V1&/&V2&/&V3& is appropriate from the WarehouseManagement view and the rough workload forecast, then you should createthe respective segment with the help of the material mastermaintenance.