  In the current work, we study the influence of a finite volume on $2+1$
$SU(3)$ Polyakov Quark-Meson model (PQM) order parameters, (fluctuations)
correlations of conserved charges and the quark-hadron phase boundary. Our
study of the PQM model order parameters and the (fluctuations) correlations of
conserved charges indicates a sizable shift of the quark-hadron phase boundary
to higher values of baryon chemical potential ($\mu_{B}$) and temperature ($T$)
for decreasing the system volume. The detailed study of such effect could have
important implications for the extraction of the (fluctuations) correlations of
conserved charges of the QCD phase diagram from heavy ion data.
