When attempting to mount an Exchange 2010 recovery point using the Granular Restore Option (GRO) in Symantec System Recovery (SSR) 2013, the error below is seen.
Unable to mount the requested recovery point. There is an error in XML document (56,27).
This issue is caused by the existence of special characters (i.e. '<') in the message store name. This can be verified by looking in the ExchangeBackup.eif file that is generated in C:\Backup Information (hidden folder) during a backup of an Exchange server.
This issue is fixed in SP2 for SSR 2013: http://www.symantec.com/docs/TECH214770.
Windows 2008 R2