1. Where a payment order is initiated by the payer, his payment service provider shall, without prejudice to Article 58, Article 74(2) and (3), and Article 78, be liable to the payer for correct execution of the payment transaction, unless he can prove to the payer and, where relevant, to the payee's payment service provider that the payee's payment service provider received the amount of the payment transaction in accordance with Article 69(1), in which case, the payee's payment service provider shall be liable to the payee for the correct execution of the payment transaction.
Where the payer's payment service provider is liable under the first subparagraph, he shall without undue delay refund to the payer the amount of the non-executed or defective payment transaction and, where applicable, restore the debited payment account to the state in which it would have been had the defective payment transaction not taken place.
Where the payee's payment service provider is liable under