hetu: Finnish Identification Code (VRK:n antama henkilötunnus).
This attribute is not for locally assigned Finnish Identification Codes (ie codes that look like FICs but are generated locally by the organisation), since nothing guarantees that they are unique. For locally assigned FIC, use schacPersonalUniqueCode instead.

Example:
urn:schac:personalUniqueID:fi:FIC:260667-123F