Error Message not displayed in popup - jsf

Question

Hello I have a problem with the following code. The Validator works correctly and everything is fine, my only problem is that the error messages for the validation are not displayed. Am I missing something or the problem is with the popup?
<rich:popupPanel id="popup" modal="true" height="280" width="200" resizeable="true" onmaskclick="#{rich:component('popup')}.hide()">
<f:facet name="header">
<h:outputText value="Simple popup panel" />
</f:facet>
<f:facet name="controls">
<h:outputLink value="#" onclick="#{rich:component('popup')}.hide(); return false;"> X </h:outputLink>
</f:facet>
<h:form id="newmssform">
<table class="position">
<tr>
<td>
<h:outputText class="output_text" value="New MSS Name:"/>
</td>
</tr>
<tr>
<td>
<h:inputText id="mssusernamefield" value="#{NetworkBean.newMss}">
<f:validator validatorId="NewMssValidator"/>
<f:attribute name="mssaddressfield" value="#{mssaddressfield}"/>
</h:inputText>
<h:message for="mssusernamefield" errorClass="errors"/>
</td>
</tr>
<tr>
<td>
<h:message for="mssusernamefield" errorClass="errors"/>
</td>
</tr>
<tr>
<td>
<h:outputText class="output_text" value="IP Address:"/>
</td>
</tr>
<tr>
<td>
<h:inputText id="mssaddressfield" value="#{NetworkBean.address}" binding="#{mssaddressfield}"/>
<h:message for="mssaddressfield" errorClass="errors"/>
</td>
</tr>
<tr>
<td>
<h:outputText class="output_text" value="User:"/>
</td>
</tr>
<tr>
<td>
<h:inputText id="mssuserfield" value="#{NetworkBean.mssUser}" />
</td>
</tr>
<tr>
<td>
<h:outputText class="output_text" value="Password:"/>
</td>
</tr>
<tr>
<td>
<h:inputSecret id="msspwdfield" value="#{NetworkBean.mssUserPass}" />
</td>
</tr>
<tr>
<td>
<a4j:commandButton style="border-radius: 5px; color: #FF6E00; font-weight: bold; font-size: 12px; margin-top: 5px;" value="Add New MSS"render="table,mss_table,oldIP" action="#{NetworkBean.addNewMss()}" />
</td>
</tr>
</table>
Here is the validator:
public void validate(FacesContext fc, UIComponent uic, Object o) throws ValidatorException {
String mssName = o.toString();
UIInput addressComponent = (UIInput)uic.getAttributes().get("mssaddressfield");
String address = addressComponent.getSubmittedValue().toString();
UIInput userNameComponent = (UIInput) uic.getAttributes().get("mssaddressfield");
String userName = userNameComponent.getSubmittedValue().toString();
UIInput passwordComponent = (UIInput) uic.getAttributes().get("mssaddressfield");
String password = passwordComponent.getSubmittedValue().toString();
if(mssName.isEmpty() || address.isEmpty() || userName.isEmpty() || password.isEmpty()){
addressComponent.setValid(false);
userNameComponent.setValid(false);
passwordComponent.setValid(false);
throw new ValidatorException(
new FacesMessage("Error!"));
}
}

Answer 1

As my prediction your message not rerender ontime
for h:message change code like below example
<a4j:outputPanel ajaxRendered="true">
<h:message for="mssusernamefield" errorClass="errors"/>
<a4j:outputPanel>
this may help you

Answer 2

FacesMessage consists of two Strings: summary and detail. When you call new FacesMessage("Error!") you're setting up the summary.
h:message's default behaviour is to show the detail, but not the summary. You can either tell it to show the summary: showSummary="true" or provide the detail in the FacesMessage: new FacesMessage("Error!", "Validation produced an error.")