On the other hand, if the buyer is disputing PayPal’s decision not to make a discretionary payment, then the Ombudsman must refuse then buyer’s application on the grounds of a want of jurisdiction.

Sorry TB,but I beg to differ.That was EXACTLY my grounds for a complaint to the Ombudsman re an SNAD that was going to cost more to post back than original cost.I 'won' ie Paypal granted me a discretionary payment AFTER the Ombudsman contacted them.

JMO but Paypal doesn't like when people complain to Ombudsman as it probably costs them more time & money to respond than it would to refund out of their own coffers so to speak.