This operation is used to determine what backups exist in the EMS for a specified list of Managed Elements. It returns the list of available backups for the specified Managed Elements. If the ME list is empty, all database backups will be returned (note that only the names are returned not the backup themselves).

Operation Exceptions:
1. NOT_IMPLEMENTED - Raised when the EMS does not support this operation.
2. INTERNAL_ERROR - Raised in case of non-specific EMS internal failure.
3. INVALID_INPUT - Raised when input parameter are syntactical incorrect.
4. ENTITY_NOT_FOUND - Raised when one of the specified managed elements does not exist.
