Tokens: Conversely
,
excessive
reliance
upon
the
subjective
criteria
of
accessibility
and
foreseeability
would
facilitate
the
applicants
’
defence
based
on
the
principle
of
legality
.
They
could
maintain
that
they
had
in
fact
relied
upon
the
official
,
accessible
and
foreseeable
interpretation
of
the
law
at
the
time
,
and
upon
“
the
GDR
’s
State
practice
,
which
was
superimposed
on
the
rules
of
written
law
at
the
material
time
”
(
see
paragraph
67
of
the
judgment
)
.
The
applicants
could
then
also
maintain
that
their
reliance
on
State
practice
,
only
later
proved
to
be
mistaken
in
the
light
of
a
strict
interpretation
of
positive
criminal
law
,
was
at
the
time
nevertheless
consistent
with
the
official
,
constant
and
foreseeable
State
practice
.
Such
an
argument
would
then
introduce
the
defence
of
an
excusable
mistake
of
law
(
error
juris
)
.
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