“”[(1) Where a person – (a) has accounted to the Commissioners for VAT for a prescribed accounting period (whenever ended), and (b) in doing so, has brought into account as output tax an amount that was not output tax due, the Commissioners shall be liable to credit the person with that amount] (2) The Commissioners shall only be liable to [credit or] repay an amount under this section on a claim being made for the purpose. [(4) The Commissioners shall not be liable on a claim under this section – (a) to credit an amount to a person under subsection (1) or (1A) above, or (b) to repay an amount to a person under subsection (1B) above, If the claim is made more than 3 years after the relevant date.] [(4ZA) The relevant date is – (a) In the case of a claim by virtue of subsection (1) above, the end of the prescribed accounting period mentioned in that subsection.”