  We find the most general, spherically symmetric solution in a special class
of tetrad theory of gravitation. The tetrad gives the Schwarzschild metric. The
energy is calculated by the superpotential method and by the Euclidean
continuation method. We find that unless the time-space components of the
tetrad go to zero faster than ${1/\sqrt{r}}$ at infinity, the two methods give
results different from each other, and that these results differ from the
gravitational mass of the central gravitating body. This fact implies that the
time-space components of the tetrad describing an isolated spherical body must
vanish faster than ${1/\sqrt{r}}$ at infinity.
