| 0 | No error. |
| 1 | Unknown subscriber. |
| 9 | Illegal subscriber. |
| 11 | Teleservice not provisioned. |
| 13 | Call barred. |
| 15 | CUG reject. |
| 19 | No SMS support in MS. |
| 20 | Error in MS. |
| 21 | Facility not supported. |
| 22 | Memory capacity exceeded. |
| 29 | Absent subscriber. |
| 30 | MS busy for MT SMS. |
| 36 | Network/Protocol failure. |
| 44 | Illegal equipment. |
| 60 | No paging response. |
| 61 | GMSC congestion. |
| 63 | HLR timeout. |
| 64 | MSC/SGSN_timeout. |
| 70 | SMRSE/TCP error. |
| 72 | MT congestion. |
| 75 | GPRS suspended. |
| 80 | No paging response via MSC. |
| 81 | IMSI detached. |
| 82 | Roaming restriction. |
| 83 | Deregistered in HLR for GSM. |
| 84 | Purged for GSM. |
| 85 | No paging response via SGSN. |
| 86 | GPRS detached. |
| 87 | Deregistered in HLR for GPRS. |
| 88 | The MS purged for GPRS. |
| 89 | Unidentified subscriber via MSC. |
| 90 | Unidentified subscriber via SGSN. |
| 112 | Originator missing credit on prepaid account. |
| 113 | Destination missing credit on prepaid account. |
| 114 | Error in prepaid system. |
| 500 | Other error. |
| 986 | Fixnet not allowed. |
| 987 | Message too long. |
| 988 | MNP/System error. |
| 989 | Supplier rejected SMS. |
| 990 | HLR failure. |
| 991 | Rejected by message text filter. |
| 992 | Ported numbers not supported on destination. |
| 993 | Blacklisted sender. |
| 994 | No credit. |
| 995 | Undeliverable. |
| 996 | Validity expired. |
| 997 | Blacklisted receiver. |
| 998 | No route. |
| 999 | Repeated submission (possible looping). |