B application and an active session already exists for
 this connection.
 </ul></dd>
<dt><span class="simpleTagLabel">Since:</span></dt>
<dd>JMS 1.1</dd>
<dt><span class="seeLabel">See Also:</span></dt>
<dd><a href="../../jakarta/jms/Session.html#AUTO_ACKNOWLEDGE"><code>Session.AUTO_ACKNOWLEDGE</code></a>, 
<a href="../../jakarta/jms/Session.html#CLIENT_ACKNOWLEDGE"><code>Session.CLIENT_ACKNOWLEDGE</code></a>, 
<a href="../../jakarta/jms/Session.html#DUPS_OK_ACKNOWLEDGE"><code>Session.DUPS_OK_ACKNOWLEDGE</c