Section 103 of the Principal Act is amended by the insertion of the following subsection after subsection (2A):

"(2AA) Where a person referred to in subsection (1) has received a refund of tax, which is the subject of an order made under this section, and where, at any time after the refund of tax has been made, the Revenue Commissioners have reasonable grounds to believe that details of the claim giving rise to the refund were incorrect and that the person was therefore not entitled to all or part of that refund, it shall be considered that the conditions as specified in the order were not fulfilled by that person and accordingly that person shall be required to repay all or part of the refund, as appropriate, to the Revenue Commissioners.".