...
Navigate to Setup > Company > Company InformationSubsidiaries > Subsidiary.
Update Company Business ID (ID: {custrecord_sta_einvoicing_payee_busin_id}).
Update Vat Registration No.
Click Save.
...
Navigate to Setup > Company > Company InformationSubsidiaries > Subsidiary.
Update Company Business ID (ID: {custrecord_sta_einvoicing_payee_busin_id}).
Update Vat Registration No.
Click Save.