Property:Has improper value for
From SSP - Common Media
"Has
improper
value
for"
is
a
predefined
property
to
track
input
errors
for
irregular
value
annotations
that
was
likely
caused
by
type
or
allowed
value
restrictions.
This
property
is
pre-deployed
(also
known
as
special
property)
and
comes
with
additional
administrative
privileges
but
can
be
used
just
like
any
other
user-defined
property.