Multipole field components of magnets and especially those of the magnets in the interaction region are the primary cause of dynamic aperture limitation in a collider. For the Jefferson Lab Electron Ion Collider (JLEIC) project, having a large enough dynamic aperture (at least 10 sigma of the rms beam size) is important to get a luminosity level of a few 10^33 cm^-2 s^-1 with low beam loss. Depending on the dynamic aperture requirements, limiting multipole field components of magnets are surveyed to find a possible compromise between the requirements and what can be realistically achieved by a magnet manufacturer. Dependence of the dynamic aperture on beam emittance and magnetic field imperfections is also analysed by numerical simulations. Show Partial Abstract