Installation of Exchange 2013 Step 1 pf 8: Mailbox role :Transport service

I am currently running the Exchange 2013 installation and i get this error. how do i go past this?

Error:
The following error was generated when "$error.Clear(); 
          if ( ($server -eq $null) -and ($RoleIsDatacenter -ne $true) )
          {
            Update-RmsSharedIdentity -ServerName $RoleNetBIOSName
          }
        " was run: "RMS Shared Identity user FederatedEmail.4c1f4d8b-8179-4148-93bf-00a95fa1e042 not found.".