The client data request date which uniquely timestamps the
creation of this conceptual row in the 'xcmGenClientDataTable'.
Usage: This request date SHALL be set (to a suitable
value) by conforming management agents during creation of each
conceptual row in the 'xcmGenClientDataTable'.
Usage: Conforming implementations which have a source of time,
SHALL set a meaningful value in this object. ONLY those
implementations which do NOT have a source of time, SHALL return
the following DEFVAL.