Microsoft Lync Server 2013, Backup Service user store backup module detected items having pool ownership conflict during import.

Question

Dear Team,
I have two Enterprise lync 2013 pools, abcPool and abcpool1. abcPool1 has got two servers, Server1 and server2. and abcpool has one FE server named "Server 3". and they have pool pairing.
Replication was fine between them when i had only one FE server in each pool, one day FE service broke on one of the FE server on abcpool1 and failed to start so i had to do failover to another pool, at that time i introduced one more FE in abcPool1, that
why now 2 FEs in abcPool2. Server1 FE service was resolved by reinstalling the binaries. However after that im unable to get the backupservice state to normal, i tried the below articles with no luck,
http://social.technet.microsoft.com/Forums/lync/en-US/0403621e-26b6-4cd0-bbca-8534a20de665/backup-service-pool-ownership-conflict-during-import?forum=lyncdeploy 
http://msucmenow.blogspot.in/2013/05/troubleshooting-lync-2013-pool-pairing.html
"Event on Server 1"
Log Name:      Lync Server
Source:        LS Backup Service
Date:          1/21/2014 8:02:33 AM
Event ID:      4073
Task Category: (4000)
Level:         Warning
Keywords:      Classic
User:          N/A
Computer:      ABC.net
Description:
Microsoft Lync Server 2013, Backup Service user store backup module detected items having pool ownership conflict during import.
Items having pool ownership conflict: 
ItemId: 1b3be172-b121-43cf-bd4e-b3d368eae6a9, DocId: 7972, DocName: urn:hcd:[email protected]
ItemId: 1b3be172-b121-43cf-bd4e-b3d368eae6a9, DocId: 7973, DocName: urn:lcd:[email protected]
ItemId: 1b3be172-b121-43cf-bd4e-b3d368eae6a9, DocId: 7974, DocName: urn:upc:[email protected]
PS C:\Users\lyncadmin> Get-CsBackupServiceStatus -PoolFqdn pool1.net | fl
ActiveMachineFqdn   : abc1.net
OverallExportStatus : SteadyState
OverallImportStatus : ErrorState
BackupModules       : {UserServices.PresenceFocus:[SteadyState,ErrorState],
                      ConfServices.DataConf:[FinalState,NormalState],
                      CentralMgmt.CMSMaster:[FinalState,NotInitialized]}
Following error in "Lync Server" logs on server3 on abcPool.
Log Name:      Lync Server
Source:        LS Backup Service
Date:          1/21/2014 9:37:47 AM
Event ID:      4069
Task Category: (4000)
Level:         Warning
Keywords:      Classic
User:          N/A
Computer:     SQL1.net
Description:
Microsoft Lync Server 2013, Backup Service user store backup module encountered an exception that was handled gracefully when importing document batch.
Batch file: UserServices\PresenceFocus\1-UserServices-8\Data\488bc218-9954-4caf-a5da-89efdb7b85a7_0_1562.xml.
 Exception: System.Data.SqlClient.SqlException (0x80131904): Snapshot isolation transaction aborted due to update conflict. You cannot use snapshot isolation to access table 'dbo.Batch' directly or indirectly in database 'rtcxds' to update, delete, or
insert the row that has been modified or deleted by another transaction. Retry the transaction or change the isolation level for the update/delete statement.
Log Name:      Lync Server
Source:        LS Backup Service
Date:          1/21/2014 9:52:45 AM
Event ID:      4064
Task Category: (4000)
Level:         Warning
Keywords:      Classic
User:          N/A
Computer:     SQL1.net
Description:
Microsoft Lync Server 2013, Backup Service user store backup module encountered an exception that was handled gracefully during export.
Additional Message: 
 Exception: System.IO.IOException: The process cannot access the file '\\SQl1.net\LyncShare\1-BackupService-10\BackupStore\UserServices\PresenceFocus\Cookie\Cookie.zip' because it is being used by another process.
   at System.IO.__Error.WinIOError(Int32 errorCode, String maybeFullPath)
   at System.IO.FileStream.Init(String path, FileMode mode, FileAccess access, Int32 rights, Boolean useRights, FileShare share, Int32 bufferSize, FileOptions options, SECURITY_ATTRIBUTES secAttrs, String msgPath, Boolean bFromProxy, Boolean useLongPath,
Boolean checkHost)
   at System.IO.FileStream..ctor(String path, FileMode mode, FileAccess access, FileShare share, Int32 bufferSize, FileOptions options, String msgPath, Boolean bFromProxy)
Praveen | MCSE Messaging 2003

Answer 1

When you add a new FE in pool acdpool1, please check you have run the following:
<system drive>\Program Files\Microsoft Lync Server 2013\Deployment\Bootstrapper.exe
For the details, check
http://technet.microsoft.com/en-us/library/jj204773.aspx
Lisa Zheng
TechNet Community Support