I'm trying to use TransactionSynchronizationManager.RegisterSynchron ization();
but I get InvalidOperationException --> TransactionSynchronization is not active.

I wonder in what situation will show this message?
The following is my configuration in my objects.xml

I'm using Spring-2.0.0M2 with NHibernate 3.3 and control whole transaction using TransactionProxyFactoryObject.

Code:
  <object id="HibernateTransactionManager" type="Spring.Data.NHibernate.HibernateTransactionManager, Spring.Data.NHibernate33">
    <property name="DbProvider" ref="DbProvider" />
    <property name="SessionFactory" ref="SessionFactory" />
  </object>
  <!--Transaction proxy factory object configuration-->
  <object id="TxProxyConfigurationTemplate" abstract="true" type="Spring.Transaction.Interceptor.TransactionProxyFactoryObject, Spring.Data">
    <property name="PlatformTransactionManager" ref="HibernateTransactionManager" />
    <property name="TransactionAttributes">
      <name-values>
        <add key="Update*" value="PROPAGATION_REQUIRED" />
        <add key="Delete*" value="PROPAGATION_REQUIRED" />
        <add key="Create*" value="PROPAGATION_REQUIRED" />
      </name-values>
    </property>
I try to add this line in my ServiceObject method named CreateDoc()
Code:
TransactionSynchronizationManager.RegisterSynchronization(new IndexHandler(docID));
I turn log4net debug message on and found no line showed "Initializing transaction synchronization".
Seems that HibernateTransactionManager do not call my TransactionSynchronization object.

Please help on this

Thanks.