Entry list...
South Africa
Laurienne Dittmann (Don Weltino K)
Gretha Ferreira (Lertevangs Lavinia)
Tanya Seymour (Ramoneur)
Nicole Smith (Chi La Rou)
So... This will be interesting. As long as they finish the competition, South Africans will be given a quota. There are many more riders actually entered, but nobody else from Group F except two Palestinians (Diana Al-Shaer and Christian Zimmermann), who obviously can't form a team.
Nevertheless, provided they finish the competition and obtain requirements, South Africans are on path to become the first ever African Olympic dressage team. And that is really cool, especially given that in 2016 they missed out on a team qualification by a ridiculously small margin of 0.06%!