| Subject | English | Korean |
| comp., MS | Presence unknown | 상태 알 수 없음 (Pertaining to a user for whom no information is known. The user might not even exist, or there could be a typo in the SIP address) |
| comp., MS | unknown member | 알 수 없는 멤버 (A member of a dimension for which no key is found during processing of a cube that contains the dimension) |