| Error Code (Hex) | Error Code (Decimal) | Error Name | Error Description |
| 439 | 1081 | Country Undef | Country not defined by admin in master data manager |
| 43A | 1082 | Invalid Network | Network not defined by admin in master data manager |
| 43B | 1083 | Price Undefined | Pricing not defined by admin for respective country and network on the primary gateway |
| 43C | 1084 | Expired (Loss Protection) | Message Undelivered due to Loss Protection policy |
| 43D | 1085 | Route Undef | Routing not defined by admin for respective country and network |
| 43E | 1086 | Failover Route Undef | Master failover not defined by admin for respective country and network |
| 43F | 1087 | Failover expired | Message Undelivered due to Loss Protection on failover gateway |
| 440 | 1088 | Failover Price Undef | Pricing not defined by admin for respective country and network on failover gateway |
| 441 | 1089 | Failover Failed | System Error: Unhandled exception during failover routing |
| 442 | 1090 | Account Validity Expired | User Account Validity expired |
| 443 | 1091 | Encoding error (Can be regenerated by sending data coding values except 0 & 8) | System Error: Encoding error due to invalid data coding value |
| 444 | 1092 | OA/DA Error | System Error: OA/DA Error due to invalid value |
| 445 | 1093 | Queue Message Expired | System Error: Queue Message Expired due to prolong gateway outage. |
| 446 | 1094 | Invalid HTTP gateway config | System Error: Invalid HTTP gateway config or response code |
| 417 | 1047 | User account inactive | User account inactive |
| 0x400 | 1024 | User Account Locked | User Account Locked |
| 0x401 | 1025 | Insufficient balance | Insufficient balance in user account |
| 0x402 | 1026 | Template Mismatch | Template Mismatch detected |
| 0x405 | 1029 | Invalid sender id | Invalid Sender id detected |
| 0x407 | 1031 | Global Blacklist Number | Global Blacklist Number |
| 0x40C | 1036 | Queue server error | System Error: Message Queue internal server error |
| 0x40D | 1037 | Cache server error | System Error: Cache DB error |
| 0x40E | 1038 | Invalid connection state | Network Error: gateway not reachable |
| 0x40F | 1039 | SMPP timeout | Network Error: gateway timeout |
| 0x410 | 1040 | Unknown SMPP error | System Error |
| 0x404 | 1028 | Invalid IP | Invalid IP for SMPP account |
| 0x414 | 1044 | Spam detected | Message failed due to spam keyword detected. |
| 0x448 | 1096 | Message length exceeded | SMS Message length exceeded |