  The values of the masses of the particles involved in the decay of
$T^+_{cc}\to D^{*+}D^0\to\pi^+D^0D^0$ suggest that due to the final state
interactions in the transition vertex $T^+_{cc}\to D^{*+}D^0 $ there may be
triangle logarithmic singularities. We discuss their possible role and show
that the tree approximation for calculating the decay widths
$T^+_{cc}\to(D^{*+}D^0+D^{*0}D^+)\to\pi^+D^0D^0$, $\pi^0D^0 D^+$, $\gamma
D^0D^+$ is quite sufficient at the current level of measurement accuracy.
