Hi Gustau Gomez,
Good day.
In the SAP standard field KUNWE KOMKBV3 is not available in the
structure. The reason for this is that receiver of the goods is not a
mandatory partner in the invoice.
If you require the Ship-to in the billing for message processing,
you should define this field as a new field.
In this regard, please check note #32662 for reference.
To fill this box in place, use the USEREXIT_KOMKBV3_FILL
Include RVCOMFZZ.
Hope this is able to help you.
Best Regards,
Lohyh