ajax url Url Action ServerScanARM_Sernum Delete Invoice data JSON stri

$.ajax(
		            {
                url: '@Url.Action("ServerScanARM_SernumDelete", "Invoice")',
                data: JSON.stringify({
                    "Sernum": Sernum,
                    "Articul2": Sku,
                    "oldArticulSernum": oldArticulSernum,
                    "InvoiceKey": @Model.InvoiceKey,
                    "CreatedUser": $("#UserId").val()
                }),
                async: false,
                dataType: "html",
                type: 'POST',
                contentType: "application/json; charset=utf-8",
                crossDomain: true,
                success: function (res) {
                    if(res != null && res != "")
                    {
                        alert(res);
                    }
                    else
                    {
                        myGrid.jqGrid('setRowData', selectedRowId, rowData);
                        if(!$("#ScanedSwovOrHide").is(':checked'))
                        {
                            $("#" + selectedRowId,"#ServerScanARM_CompositionTable").css({display:"none"});
                        }
                        myGrid.trigger('reloadGrid');
                    }
                },
                error: function () {
                    alert('Ошибка при вызове или заполнении модального окна');
                }
            });