Bitfield('activation_policy_mask', 1,
                 Bitfield.Bit('activation_lock', 1, default=0),
                 Bitfield.Bit('deactivation_lock', 1, default=0),
                 Bitfield.Bit('commanded_deactivation_ignored', 1, default=0),
                 Bitfield.Bit('default_activation_locked', 1, default=0),