This preserves the type of remote peer identity involved in a specific recorded IKE negotiation failure, per its description - the remote-side counterpart to cisgIpsSgFailLocalType. It tells an admin what kind of identity the failing peer had attempted to present, useful when trying to determine whether an unexpected or unrecognized peer was the source of a failed connection attempt. An identity type an admin doesn't recognize as belonging to any expected partner could indicate an unauthorized or misdirected connection attempt rather than a legitimate configuration problem.