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.

2.   Where a payment service user denies having authorised an executed payment transaction, the use of a payment instrument recorded by the payment service provider, including the payment initiation service provider as appropriate, shall in itself not necessarily be sufficient to prove either that the payment transaction was authorised by the payer or that the payer acted fraudulently or failed with intent or gross negligence to fulfil one or more of the obligations under Article 69. The payment service provider, including, where appropriate, the payment initiation service provider, shall provide supporting evidence to prove fraud or gross negligence on part of the payment service user.