The amount of the fee paid at the start of the parking period is deducted from the amount of the post-parking charge, provided that the following conditions are met:
1° The proof of payment corresponding to the amount paid is affixed to the vehicle or transmitted by dematerialised means in accordance with the provisions of article R. 417-3-1 of the Highway Code;
2° The maximum duration of paid parking, in the zone in question, during which the proof of payment was printed or transmitted has not expired at the time at which the sworn official issues the payment notice.
If several proofs of payment meet the conditions set out in 1° and 2°, only the most recent of these proofs of payment is taken into account when making the deduction set out in the first paragraph.
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