147.0.2. The Commission must revise the amount of a deferred pension the payment of which began after 31 December 1994, taking into account any clerical error or correction made to the data used for computing the pension on the date of retirement, on or before the date occurring 6 months after the date on which payment of the pension began.
Where the Commission is unable to revise the amount of the pension for the date applicable pursuant to the first paragraph, it may do so within the 12 months following that date but shall take into account only the corrections received before the end of the 12-month period.
The amount of the pension may not be adjusted downwards thereafter by reason of any clerical error or correction made to the data used for computing the pension on the date of retirement.