1. Member States shall ensure that, without prejudice to Article 71, in the case of an unauthorised payment transaction, the payer's payment service provider refunds the payer the amount of the unauthorised payment transaction immediately, and in any event no later than by the end of the following business day, after noting or being notified of the transaction, except where the payer's payment service provider has reasonable grounds for suspecting fraud and communicates those grounds to the relevant national authority in writing. Where applicable, the payer's payment service provider shall restore the debited payment account to the state in which it would have been had the unauthorised payment transaction not taken place. This shall also ensure that the credit value date for the payer's payment account shall be no later than the date the amount had been debited.
2. Where the payment transaction is initiated through a payment initiation service provider, the account servicing payment s
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