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The Lync 2010 Server Merge-CsTopology -TopologyXmlFilename Powershell command will fail with the following error:
WARNING: Total number of errors is 1
Merge-CsLegacyTopology : The domain "contoso.com" in "Office Communications Server 2007" / "Office Communications Server 2007 R2" has authoritative "True".
The domain "contoso.com" in Lync Server 2010 has authoritative "False".These two values need to be equal before you can continue merging the topology.
At line:1 char:23+ Merge-CsLegacyTopology <<<< -TopologyXMLFilename c:\wave14\xml_filename5.xml+ CategoryInfo: InvalidData: (contoso.com:String) [Merge-CsLegacyTopology], Exception + FullyQualifiedErrorId :BuildTopologyError,Microsoft.Rtc.Management.Coexistence.GetOcsWMITopologyCmdlet
Before the Lync 2010 Server Merge-CsTopology Powershell cmdlet can complete the Merge migration process between the Communications Server and Lync 2010 Server pools, the Communications server pool's SIP domains Authoritative value must be set to False.
Warning: The resolution for this issues requires making permanaent changes to Windows Active Directory, directory service domain that hosts the Communications server infrastructure. Please make sure that you perform a current back up of the Active Directory, directory service that hosts the Communications server enabled domain.
(http://go.microsoft.com/fwlink/?LinkId=151500)for other considerations.
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