SAP Message VL459 - Batch split for item &1 is already packed. Check the packing data

Diagnosis
For the item category of the main batch item, an indicator
controls that all the cumulated total quantity of all split itemsshould be packed for an item with batch management requirement. Thissetting is overwritten by the system if at least onebatch split item isassigned to a HU-managed storage location. This ensures that only thesplit items are packed (compulsory if you useHandling Unit Management
).
The repeat check of the delivery has shown that no batch split itemsare assigned to a HU-managed storage location. This means that thesystem uses the setting from the item category again, and the batchmain item &V1& should be packed. However, this can only occur once thepreviously packed batch split items from item &V1& have been unpacked.

System Response
The system outputs this message in order for you to correct thedelivery. You cannot save the delivery as long as the packing datacontains errors.

Procedure
Call the packing transaction and unpack the batch split items for itemV1.

Procedure for System Administration
If necessary, check your Customizing settings to see whether the itemcategory is set up correctly. To do this, choose the activityDefine Item Categories for Deliveriesin Customizing for Shipping.