In tip 2886, How can I enable diagnostic event logging for Active Directory services, I discussed the Active Directory diagnostic event logging categories for Windows 2000, and how to enable differing levels of diagnostic logging.
The following Active Directory diagnostic event logging categories have been added for Windows Server 2003:
21 Linked-Value Replication
22 DS RPC Client
23 DS RPC Server
24 DS Schema </b>
NOTE: See the following Microsoft Knowledge Base articles: