le="padding: 0;"
                                    var="bi" 
                                    scrollable="true"
                                    scrollHeight="350px"
                                    rowKey="#{bi.searialNo}"
                                    value="#{purchaseOrderRequestController.billItems}" 
                                    selection="#{purchaseOrderRequestController.selectedBillItems}"
                                    id="itemList" >  

                                 