title: Spring: No message found under code for locale 'en_US'
body: <p>applicationContext-Service.xml</p>
  
  <pre><code>&lt;bean id="messageSource" class="org.springframework.context.support.ReloadableResourceBundleMessageSource"&gt;
      &lt;property name="basenames"&gt;
          &lt;list&gt;&lt;value&gt;messages&lt;/value&gt;&lt;/list&gt;
      &lt;/property&gt;
  &lt;/bean&gt;
  </code></pre>
  
  <p>I have messages_en_US.properties under /src/messages_en_US.properties</p>
  
  <pre><code>registerForm.passwordNotMatch=Password does not match.
  </code></pre>
  
  <p>This is line of code is bringing up the error:</p>
  
  <pre><code>binding.addError(new FieldError(REGISTER_FORM, "passwordNotMatch", messageSource.getMessage("registerForm.passwordNotMatch", null, locale)));
  </code></pre>
  
  <p>Error: No message found under code 'registerForm.passwordNotMatch' for locale 'en_US'.</p>
  
  <p>What might be wrong?</p>