"ZA" is the standard two-letter country code for South Africa. in the same code list, "SA" refers to Saudi Arabia, and Zambia is "ZM". https://en.wikipedia.or

"ZA" is the standard two-letter country code for South Africa. in the same code list, "SA" refers to Saudi Arabia, and Zambia is "ZM". https://en.wikipedia.org/wiki/ISO_3166-1_alpha-2 https://en.wikipedia.org/wiki/ISO_3166-1_alpha-2