23. In the case of a universal credit decision where the Department is satisfied that, in relation to a limited capability for work determination, the claimant—
(a)failed to notify an appropriate office of a change of circumstances which the claimant was required by regulations under the Administration Act to notify; and
(b)could reasonably have been expected to know that the change of circumstances should have been notified,
the superseding decision takes effect in accordance with paragraph 24.