Basis must be one of the following: 0 = 30/ 360 US, 1 = Actual/ actual, 2 = Actual/ 360, 3 = Actual/ 365, 4 = European 30/ 360
Basis moat ien fan de folgjende wêze: 0 = 30/ 360 US, 1 = Werklike/ werklike, 2 = Werklike/ 360, 3 = Werklike/ 365, 4 = European 30/ 360