A New Yorker travels to New Jersey to buy a $100 telephone answering machine. The New Jersey company that sells the machine then deposits the $100 check in its account at a New York bank. How would these transactions show up in the balance of payments accounts of New York and New Jersey? What if the New Yorker pays cash for the machine?

Wouldn't the answer just be that the transactions that occur within a country or region or states are not recorded in the balance of payment. This transaction occurs within a country so it won't be recorded in the balance of payment right?