(1) If:
(a) the Agency receives notice under subsection 42(3) or (5) as applied by section 106A to the effect that a client who has chosen to participate in the deferred payment scheme does not have, or no longer has, a tax file number; and
(b) at the end of 28 days after the Agency receives that notice, the Agency has not been notified of a number that the Agency is satisfied (in accordance with guidelines issued by the Commissioner) is the client's tax file number;
the Agency must not permit the client, as an eligible client, to continue to be enrolled in, or to undertake, the unit of study for the study period for which the client is enrolled.
(2) The regulations may set out procedures for the Agency to notify clients who may be affected by subsection (1).