66.—(1) Subject to paragraph (4), where a payment service provider refuses to execute a payment order, it must notify the payment service user of—
(a)the refusal;
(b)if possible, the reasons for such refusal; and
(c)the procedure for rectifying any factual errors that led to the refusal.
(2) Any notification under paragraph (1) must be given or made available in an agreed manner and at the earliest opportunity, and in any event within the periods specified in regulation 70.
(3) The framework contract may provide for the payment service provider to charge the payment service user for such notification where the refusal is reasonably justified.
(4) The payment service provider is not required to notify the payment service user under paragraph (1) where such notification would be otherwise unlawful.
(5) Where all the conditions set out in the payer’s framework contract have been satisfied, the payment service provider may not refuse to execute an authorised payment order irrespective of whether the payment order is initiated by the payer or by or through a payee, unless such execution is otherwise unlawful.
(6) For the purposes of regulations 70, 75 and 76 a payment order of which execution has been refused is deemed not to have been received.