title: JSF Customize validation message for h:selectOneMenu (if nothing selected)
body: <p>I have a h:selectOneMenu thats filled with enum values, which works fine. The only problem is that i don't know how to overwrite the standard JSF error message, when no valid value is selected. The error message is always <code>bv:title: 'Choose' must be convertible to an enum from the enum that contains the constant 'Choose'.</code>
  Although i have specified requiredmessage and validatormessage (which works on InputText), only the standard JSF message is shown.</p>
  
  <p>The snippet:</p>
  
  <pre><code>&lt;h:selectOneMenu id="title" value="#{personBean.person.title}" required="true"
                    requiredMessage="ERROR"
                    validatorMessage="ERROR"&gt;
    &lt;f:selectItem itemValue="Choose" /&gt;
    &lt;f:selectItems value="#{personBean.titleOptions}" /&gt;
    &lt;f:ajax event="blur" render="titleError" /&gt;
    &lt;f:validateRequired/&gt; 
  &lt;/h:selectOneMenu&gt; 
  &lt;h:message for="title" errorClass="invalid" id="titleError" /&gt;
  </code></pre>
  
  <p>How can i overwrite the standard validator message?
  Or better - can i create a copy of the JSF messages.properties with customized error messages (don't want to define all errors in my own messages.properties again)? </p>