Message type: E = Error
Message class: VW - Shipment Processing Output
Message number: 343
Message text: Sub-items for item &1(&2) not found
The system expects sub-items for the item you specified (for example,
BOM or batch split items).
The system issues an error message and will not allow you to continue with this transaction until the error is resolved.
Error message extract from SAP system. Copyright SAP SE.