Create Shipment Packages in Acumatica

gistfile1.txt

PUT /entity/Tote/18.200.001/Shipment?$filter=ShipmentNbr eq '0000032'&$expand=Packages HTTP/1.1
Host: YourERPInstance
Content-Type: application/json
{
    "Packages":[
        {
            "BoxID": {"value":"PALLET"},
            "Confirmed": {"value":"true"},
            "Description": {"value":"Not So Big"},
            "Weight": {"value":"0.0"},
            "TrackingNbr": {"value":"ABC123"},
            "CustomRefNbr1": {"value":"987654"},
            "CustomRefNbr2": {"value":"123456"}
        },
        {
            "BoxID": {"value":"PALLET"},
            "Confirmed": {"value":"true"},
            "Description": {"value":"The Big Jose"},
            "Weight": {"value":"0.0"},
            "TrackingNbr": {"value":"ZYXWVU"},
            "CustomRefNbr1": {"value":"4455AA"},
            "CustomRefNbr2": {"value":"EGHKIUGG$"}
        }
        ]
}