GST Number Inactive

Dear all, one tax payer having gst no. in the same state, one gst no. is inactive he didn't file any return from July 2017( he don't have transaction for that gst.no). another gst no. is active he is filling all return on time , my doubt both gst no. having same PAN, this inactive account create any future problems for active gst no., or we want take any action for that inactive account. please suggest