(1) Where a person has provided the Revenue Commissioners with information in purported compliance with section 817E, 817F, 817G or 817H(1) and the Commissioners have reasonable grounds for believing that the person has not provided all of the specified information, the Commissioners may by notice in writing require the person to provide the information, specified in the notice, that the Commissioners have reasonable grounds for believing form part of the specified information.
(2) Where a person has provided the Revenue Commissioners with specified information in compliance with section 817E, 817F, 817G or 817H(1) the Commissioners may by notice in writing require the person to provide such other information about, or documents relating to, the disclosable transaction, as the Commissioners may reasonably require in support of or in explanation of the specified information.
(3) A person to whom the Revenue Commissioners have issued a notice under subsection (1) or (2) shall comply with
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