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If you do not run the Prep Domain step in a forest, event ID 30011 and the following error message are logged in the Microsoft Office Communications Server 2007 log or in the Microsoft Office Communications Server 2007 R2 log:
Event Type: Error Event Source: OCS User Replicator Event Category: (1009) Event ID: 30011 Date: 5/23/2008 Time: 7:41:53 AM User: N/A Computer: contosofe1 Description: Encountered an unrecognized error while processing users from a domain. This error caused User Replicator to abort synchronization of this domain. Synchronization will be retried for this domain. If this domain is not enabled for Office Communications Server, then this error can be ignored. Domain: contoso.com Error: 50 (Insufficient Rights) Cause: The cause for this error can vary. Please review the errors listed above. Resolution: Contact support services if the error is not descriptive enough to remedy the problem. For more information, see Help and Support Center at http://go.microsoft.com/fwlink/events.asp.
This issue occurs if the computer that is running Communications Server 2007 or Microsoft Office Communications Server 2007 R2 is located in a domain that is part of a forest.
You can safely ignore this issue if the following conditions are true:
The domain has no Communications Server 2007 or Office Communications Server 2007 R2 users.
The domain has no computers that are running Communications Server 2007.
The Prep Domain step adds access control entries (ACEs) to universal groups. These ACEs grant permissions to host users and to manage users within the domain.
The Prep Domain step is required in all domains in which you want to deploy Communications Server, and it is required in any domains in which Communications Server users may be located. The Prep Domain step runs one time in each domain.