Migration EX2007 to 2013 error step 8 of 15

step 8 of 15: Mailbox rule: Transport service

Error:
The following error was generated when "$error.Clear(); 
          if ( ($server -eq $null) -and ($RoleIsDatacenter -ne $true) )
          {
            Update-RmsSharedIdentity -ServerName $RoleNetBIOSName
          }
        " was run: "Database is mandatory on UserMailbox. Property Name: Database".

I am trying to install exchange 2013 sp1 cu6 cas server

i have exchange 2007 installed

how can i solve this issue

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