Incorrect pancard number

my relative had filled a return wid incorrect pan card number... now the IT officer notifies tat the return wid respective pancard number is incorrect..nd hence asks 4 copy of pan card.. so in such case what 2 do submit along with copy of correct pan card nmbr?? also assesse is not liable 4 any tax,so in such case,non submission of documents again will cause any penalty or nethng such??? plz reply soon....thank you