Nucleation, growth, and coalescence of intra- or intergranular micro-voids is a usual scenario by which ductile metallic materials fail. It has been observed that the development of strain heterogeneity around a deforming and growing void leads to microstructure changes in the surrounding crystal [1]. It seems that the last aspect of the mechanics of porous metallic materials has not been fully explored. In this contribution we present finite element (FE) full-field analysis of the uniaxial deformation process of the sample of Al FCC multicrystal with four intentionally-put intragranular voids, located at the central part of crystallites. The sample geometry and loading conditions applied in the finite element simulations thoroughly reconstruct tensile test performed in our lab using DIC technique. Moreover, before and after deformation process the local crystal orientation maps are acquired using the EBSD. The experimental procedure described [2] is followed. This enable us to compare the strain and lattice rotation heterogeneity induced by different initial orientation of crystal surrounding the void. For the FE simulation the on-house implementation of finite strain crystal plasticity (CP) is used, which assumes plastic deformation by slip on 12 slip systems relevant for fcc metal crystals, the viscoplastic power law for slip driven by resolved shear stress, and exponential hardening law for its critical value. The performed study enables us to verify the range of applicability of the applied CP formulation and quantify the impact of defects on the local microstructure changes.