  The Heusler compound ScInAu$_2$ was previously reported to have a
superconducting ground state with a critical temperature of 3.0 K. Recent high
throughput calculations have also predicted that the material harbors a
topologically non-trivial band structure similar to that reported for
beta-PdBi$_2$. In an effort to explore the interplay between the
superconducting and topological properties properties, electrical resistance,
magnetization, and x-ray diffraction measurements were performed on
polycrystalline ScInAu$_2$. The data reveal that high-quality polycrystalline
samples lack the super-conducting transition present samples that have not been
annealed. These results indicate the earlier reported superconductivity is
non-intrinsic. Several compounds in the Au-In-Sc ternary phase space (ScAu$_2$,
ScIn$_3$, and ScInAu$_2$) were explored in an attempt to identify the secondary
phase responsible for the non-intrinsic superconductivity. The results suggest
that elemental In is responsible for the reported superconductivity in
ScInAu$_2$.
