Dynamic Aperture Studies in $e^{+}e^{−}$ Factories with Crab Waist

Crab Waist collision scheme being applied to the electron-positron collider may limit a dynamic aperture essentially. In the paper we discuss some aspects of such limitation including low emittance lattice, strong crab sextupoles, crosstalk between beam-beam nonlinear force and lattice nonlinearities, and small multipole errors in the final focus quadrupoles.