> For the complete documentation index, see [llms.txt](https://smarthive-tech-solution.gitbook.io/smarthive-tech-solution-api/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://smarthive-tech-solution.gitbook.io/smarthive-tech-solution-api/sms/sms-dlr-error-codes.md).

# SMS DLR Error Codes

Common SMS DLR Codes and Descriptions

| SMS DLR Code    | Status Description                                              |
| --------------- | --------------------------------------------------------------- |
| UNDELIV err:0dc | Absent Subscriber                                               |
| EXPIRED err:206 | Absent Subscriber                                               |
| EXPIRED err:21b | Absent Subscriber                                               |
| UNDELIV err:21b | Absent Subscriber                                               |
| EXPIRED err:023 | Absent Subscriber                                               |
| EXPIRED err:027 | Absent Subscriber                                               |
| EXPIRED err:053 | Absent Subscriber                                               |
| EXPIRED err:054 | Absent Subscriber                                               |
| UNDELIV err:058 | Absent Subscriber                                               |
| UNDELIV err:439 | Absent subscriber or ported subscriber or subscriber is barred  |
| UNDELIV err:254 | Subscriber's phone inbox is full                                |
| EXPIRED err:254 | Subscriber's phone inbox is full                                |
| EXPIRED err:220 | Subscriber's phone inbox is full                                |
| EXPIRED err:120 | Subscriber's phone inbox is full                                |
| REJECTD err:008 | Subscriber's phone inbox is full                                |
| UNDELIV err:255 | Invalid or inactive mobile number                               |
| UNDELIV err:20b | Invalid or inactive mobile number                               |
| UNDELIV err:004 | Invalid or inactive mobile number                               |
| UNDELIV err:510 | Invalid or inactive mobile number                               |
| EXPIRED err:215 | Invalid or inactive mobile number                               |
| EXPIRED err:20d | Subscriber is barred on the network                             |
| UNDELIV err:130 | Subscriber is barred on the network                             |
| UNDELIV err:131 | Subscriber is barred on the network                             |
| EXPIRED err:222 | Network operator system failure                                 |
| EXPIRED err:602 | Network operator system failure                                 |
| EXPIRED err:306 | Network operator system failure                                 |
| UNDELIV err:032 | Network operator system failure or operator not supported       |
| UNDELIV err:008 | Subscriber is on DND                                            |
| UNDELIV err:085 | Subscriber is on DND                                            |
| UNDELIV err:065 | Message content or senderID is blocked on the promotional route |
| UNDELIV err:600 | Message content or senderID is blocked on the promotional route |
| EXPIRED err:40a | SenderID not whitelisted on the account                         |
| UNDELIV err:082 | Network operator not supported                                  |
| UNDELIV err:00a | SenderID is restricted by the operator                          |
| EXPIRED err:078 | Restricted message content or senderID is blocked.              |
| UNDELIV err:432 | Restricted message content or senderID is blocked.              |