pre>
<div class="block"><p>
 The message identifier of the <a href="../../../jakarta/faces/application/FacesMessage.html" title="class in jakarta.faces.application"><code>FacesMessage</code></a> to be created if the conversion of the
 <code>Number</code> value to <code>String</code> fails. The message format string for this message may optionally
 include the following placeholders:
 <ul>
 <li><code>{0}</code> relaced by the unconverted value.</li>
 <li><code>{1}</code> replaced by a <code>String</code> who