at 
 callee (resource adapter
 or application server for system contracts) cannot execute an operation 
 because the operation is not a supported feature. For example, if the 
 transaction support level for a resource adapter is 
 <code>NO_TRANSACTION</code>, an invocation of <code>getXAResource</code> 
 method on a <code>ManagedConnection</code> object should throw a
 <code>NotSupportedException</code> exception.</div>
<dl>
<dt><span class="simpleTagLabel">Version:</span></dt>
<dd>1.0</dd>
<dt><span class=