When sending a package to Korea, where does the sender write the recipient's Personal Customs Clearance Code? It's for a package from the US to Korea.
I had mixed results from Google of where to write the PCCC, for example, on the customs form in the name field under attention, or in the address field line 2, or in the tax code field, and even written directly on the box itself with a permanent marker. Chat support on the USPS site was not helpful at all.