Hi,
M7 043 can not be customized as of my knowledge. Please read the long text for the message and the note: 18206 - Valuation type during the goods receipt
Also refer the KBA: 1712162 - Error 'M7 043' is raised when trying to post a goods receipt for an outbound delivery in MIGO on STO-intra-company scenario if its an intra company STO
Regards,
AKPT