:panelGrid columns="1" >
                                                <p:panel header="Not Available" >
                                                    <p:selectOneListbox id="lstSelectItems" style="width: 300px; height: 200px; max-width: 300px; max-height: 200px; min-width: 300px; min-height: 200px;" value="#{storeIssueController.selectedAlternative}"  >
                                                        <f:selectItems  value="#{storeIssueController.itemsWithoutStocks}" var="si" itemLabel="#{si