ICOCA can't be used in the PASMO area because its interoperation with PASMO isn't currently projected for private railways, route buses and public transportations of the metropolitan area.
首都圏の私鉄・路線バス・公営交通のPASMOについては、当面相互利用を行わないため、PASMOエリアでのICOCAの利用はできない。