  We consider the $U(1) ^{n}$ extension of the effective $\mathcal{N}=2$
supersymmetric $U(1) \times U(1) $ model of $arXiv:1204.2141$; and study the
explicit relationship between partial breaking of $\mathcal{N}=2$ supersymmetry
constraint and D3 brane tadpole anomaly of type IIB string on Calabi-Yau
threefolds in presence of H$^{RR}$ and H$^{NS}$ fluxes. We also comment on
supersymmetry breaking in the particular $\mathcal{N}=2$ $U(1) $ Maxwell
theory; and study its interpretation in connection with the tadpole anomaly
with extra localized flux sources.
