Message type: E = Error
Message class: VW - Shipment Processing Output
Message number: 516
Message text: Field '&1'(&2-&3) cannot be maintained in general
You have tried to change a field that cannot be changed by a user.
There are several possible reasons for this:
It is a field defined by the system (for example, a client)
It is a field determined by the system (for example, shipment number,
overall status, settlement or calculation status)
The field contains administrative data determined by the system (for
example, date, time, user for creating/changing)
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.