Serial Numbers
in Handling Units 
Use
You can assign materials with serial numbers in handling unit items. If these handling units are used in deliveries or material documents, the serial numbers are automatically copied to the subsequent documents.
The serial numbers in handling units are supported for the following operations:
- Creation and modification of handling units
- Goods receipt and goods issue of handling units
- Repacking and transfer of handling units
A storage location can be labeled as subject to HU in Handling Unit Management Customizing, that is, only stocks located in handling units can be stored in this storage location. If a handling unit is located at a storage location subject to handling units, it has the movement status realized with stock information .
A serial number can only be in a maximum of one handling unit with the movement status realized with stock information at any one time. The serial numbers can only be used with this handling unit.
See also
For more information on serial numbers in handling, see the SAP Library under Logistics -> Logistics - General (LO) -> LO - Handling Unit Management.