Variants of a mold are catalogued separately, so each one has its own sets and minifigs. Check these too if something you expect is missing here.

• 98107 Dome Hemisphere 11 x 11 with 2 x 2 Studs on Top this part is a alternate of it
• 98115 Dome Hemisphere 11 x 11 with 2 x 2 Studs on Top, Death Star Half Pair of this part