  In this article we consider closed bosonic string in the presence of constant
metric and Kalb-Ramond field with one non-zero component, $B_{xy}=Hz$, where
field strength $H$ is infinitesimal. Using Buscher T-duality procedure we
dualize along $x$ and $y$ directions and using generalized T-duality procedure
along $z$ direction imposing trivial winding conditions. After first two
T-dualizations we obtain $Q$ flux theory which is just locally well defined,
while after all three T-dualizations we obtain nonlocal $R$ flux theory. Origin
of non-locality is variable $\Delta V$ defined as line integral, which appears
as an argument of the background fields. Rewriting T-dual transformation laws
in the canonical form and using standard Poisson algebra, we obtained that $Q$
flux theory is commutative one and the $R$ flux theory is noncommutative and
nonassociative one. Consequently, there is a correlation between non-locality
and closed string noncommutativity and nonassociativity.
