How is Vendor_site_id in rvc_shipment_headers populate
                    
When a user doing receiving, verdor_id and vendor_site_id should be populate in  rvc_shipment_headersWhen a shipment headers contain several lines of rcv_transactions with different vendor site id,
which vendor site id should be populate in rvc_shipment_headers?
Is it correct to remain the column as null in this situation?
For example, as below transactions.
                
                which vendor site id should be populate in rvc_shipment_headers?
Is it correct to remain the column as null in this situation?
For example, as below transactions.
| TRANSACTION_ID | SHIPMENT_HEADER_ID | SHIPMENT_LINE_ID | USER_ENTERED_FLAG | DESTINATION_TYPE_CODE | PO_HEADER_ID | PO_RELEASE_ID | PO_LINE_ID | PO_LINE_LOCATION_ID | PO_DISTRIBUTION_ID | PO_UNIT_PRICE | CURRENCY_CODE | VENDOR_ID | VENDOR_SITE_ID | 
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