Faces Not Matched
 

Hi to everyone,
i am a new user of ANSYS ICEMCFD and right now i am dealing with a geometry which consists of 3 pairs of opposite surfaces(total 6 surfaces). Until the output process, i do not encounter any problem. However, when i am generating the .msh file,i see different number of faces between the pair surfaces. After trying to reduce the nodes, the faces were matched. However, i do not have the desired number of nodes. What can i do in order to have both the desired number of nodes and matched faces?
THANKS.