1. Member States shall require that, where a payment service user denies having authorised an executed payment transaction or claims that the payment transaction was not correctly executed, it is for the payment service provider to prove that the payment transaction was authenticated, accurately recorded, entered in the accounts and not affected by a technical breakdown or some other deficiency of the service provided by the payment service provider.

If the payment transaction is initiated through a payment initiation service provider, the burden shall be on the payment initiation service provider to prove that within its sphere of competence, the payment transaction was authenticated, accurately recorded and not affected by a technical breakdown or other deficiency linked to the payment service of which it is in charge.