What I mean is that: they either use the Israeli New Shekel or Jordanian Dinar to process and conduct transactions due to them not having an official currency of their own that deems it Palestinian. Why don’t they have their own, since they are using someone else’s currency for daily purchases or transactions.
Palestine’s statehood has been a contested thing for as long as it has existed. It’s never really had a “government”, so it doesn’t have an economy or a currency.