tes that the request cannot be
 executed because the operation is not a supported feature. For example, 
 because nested transactions are not supported, the Transaction Manager 
 throws this exception when a calling thread
 that is already associated with a transaction attempts to start a new 
 transaction. (A nested transaction occurs when a thread is already
 associated with one transaction and attempts to start a second 
 transaction.)</div>
<dl>
<dt><span class="seeLabel">See Also:</span></dt>
<dd><a hr