That's the accuracy required to guarantee successful hits from the front in Soul of the Creator (Savage).
Accuracy requirements from the flank or for magic are lower, but in a raid context, you want frontal accuracy even if you're not a tank, for times when mechanics compel you to attack from the front.

If you're unsure if your current accuracy is high enough for something you want to do, go a few rounds with the Stone, Sky, Sea dummy for that fight. They're programmed with the same accuracy requirements as the fights they represent.

If the content you want to do doesn't have a representative dummy in Stone, Sky, Sea, then it's casual enough content that an accuracy deficiency probably won't be a severe detriment.