> For the complete documentation index, see [llms.txt](https://smsc.revicom.ltd/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://smsc.revicom.ltd/how-to-work-with-smsc/reserved-error-codes.md). # Reserved error codes The error codes that SMSC returns in response to BIND and **SUBMIT\_SM** packets are tabled below. | **Error code** | **Error message text** | **Description** | | -------------- | --------------------------- | --------------------------------------------------------------------------- | | 0x00000005 | ЕSME already in bound state | Session with system\_id is deemed active | | 0x0000000A | Invalid Source Address | Invalid sender ID (short number, source address) | | 0x0000000B | Invalid Dest Addr | Invalid recepient’s name (MSISDN, dest address) | | 0x0000000D | Bind failed | Selected connection type is no supported, produced BIND packet is incorrect | | 0x0000000E | Invalid password | Invalid password to connect to the SMSC | | 0x0000000F | Invalid System ID | Specified connection parameters are invalid | | 0x00000500 | Bad character code | Content contains bad words | Below are tabled the error codes that the SMSC returns in response to the **DELIVER\_SM** packet for SMS. | Error code | Error message text | Description | | ---------- | -------------------------------- | ----------------------------------------------------------------------------------------------------- | | 11 | error-address-format | Recipient phone number is wrong or not existing | | 127 | Timeout of getting status | Getting message status has expired | | 453 | Block list msisdn | The message is rejected due to blocklisted msisdn. This error code is also relevant for Flashcall. | | 454 | Block list sender | The message is rejected due to blocklisted sender ID. This error code is also relevant for Flashcall. | | 455 | - | Sending messages in this direction is restricted. | | 456 | - | The subscriber's phone number does not exist. | | 457 | - | The sender's ID is not registered. | | 458 | - | Traffic is blocked on the platform. | | 501, 1501 | Unknown subscriber | Phone number does not exist or is not in service | | 502, 1502 | SMSC failure | Internal routing error on the operator's side | | 503, 1503 | Region not supported | SMS delivery to this region is not available for the operator | | 504, 1504 | Teleservice not provisioned | The subscriber's device does not support SMS | | 505, 1505 | Call barred service activated | The subscriber has blocked incoming messages or is restricted by the operator | | 506, 1506 | Illegal subscriber | The subscriber is blocked by the operator or SMS service is not provided | | 508, 1508 | Absent subscriber | Subscriber is unavailable (switched off or out of coverage) | | 509, 1509 | Roaming restrictions | Subscriber is roaming or lacks roaming agreements | | 510, 1510 | Subscriber barred during mnp | Bank SMS blocked due to recent SIM card change (24-hour restriction) | | 511, 1511 | Message queue full | The operator's message queue for the subscriber is full | | 513, 1513 | Oper invsrcaddr | Sender name is blocked by the operator | | 515, 1515 | Equipment protocol error | Subscriber's device cannot receive SMS due to a technical issue | | 517, 1517 | Memory capacity exceeded | Subscriber's phone memory is full | | 520, 1520 | Msisdn blacklisted | The number is blacklisted by the operator | | 522, 1522 | Black list | Sender name is blacklisted or not allowed for the recipient | | 523, 1523 | Subscriber is busy | The subscriber's device is busy and cannot receive SMS | | 526, 1526 | Unknown equipment | Device (IMEI) is unknown or not allowed in the network | | 527, 1527 | SMSC timeout | Delivery report not received within the expected time (network/device issue) | | 529, 1529 | Unauthorized subscriber | Recipient is on an opt-out list | | 532, 1532 | Duplicate error | Message blocked as duplicate | | 561, 1561 | Invalid subscriber | Invalid number format (landline, unsupported numbering, or recent operator change) | | 564, 1564 | Template not allowed | Message blocked by spam filters (forbidden words or sender restrictions) | | 575, 1575 | Fraud | Number blocked due to suspected fraud (auto-unblock in 24h) | | 601 | Not viber user | The recipient is not a Viber user | | 605 | Status error user blocked | The recipient has blocked notifications | | 607 | No suitable device | The app version does not support service messages | | 614 | Error caption too long | Button caption exceeds the allowed length | | 616 | Message limit exceeded | Maximum allowed messages delivered | | 617 | Not template match | No matching message template found | | 618 | Filtered | Message contains prohibited words | | 621 | Marketing template undeliverable | Marketing message limit reached for the recipient | | 644 | Not whatsapp user | The recipient is not a WhatsApp user | | 662 | User is part of an experiment | User is in a test group with restricted marketing messages | | 663 | Message undeliverable | Generic WhatsApp delivery failure (exact cause unknown) | | 680 | Session not started | Template issues: blocked, warned, or mismatched | | 681 | Media download error | Failed to download media from the provided link | | 682 | Generic whatsapp error | Unknown WhatsApp error (no specific details) | | 724 | Image is invalid | Invalid image or missing text in the message | | 733 | Generic MMS error | General MMS delivery failure (contact support) | | 734 | No success status | MMS center did not return a success status | | 735 | Invalid MMS | MMS creation failed (invalid content) | | 736 | MMS center error | Failed to send request to the MMS center | | 737 | File too large | File size exceeds the allowed limit | | 738 | Image resolution exceeded | Image resolution is too high | | 739 | Unsupported file type | File type is not supported | | 740 | Delivery not confirmed | No delivery confirmation (device issue or undownloaded MMS) | | 741 | MMS without image | Invalid message due to missing image | | 999 | Unknown Error | Unknown error | Below are tabled the error codes the SMSC returns in response to the DELIVER\_SM packet for Flashcall. | Error code | Error message text | Description | | ---------- | ------------------------ | ----------------------------------------------------------------------------------------------- | | 263 | unknown-error | Unknown error | | 265 | invalid-message | Invalid message | | 266 | destination-denied | Destination or operator is not supported | | 267 | number-generation-failed | Code transmission number has not been generated | | 268 | duplicate | Message is duplicate (duplicating is sending a message to the same number within a minute) | | 269 | sending error | Request has been received but not sent to the operator due to an unexpected system failure | | 270 | rejected | Call cannot be made (the phone number is busy with another call, or other SIP-error has arisen) | Below are tabled the error codes for Telegram Gateway. | Error code | Error message text | Description | | ---------- | ---------------------------- | -------------------------------------------------------------------------------------------------------------------------------------- | | 1400 | gateway-error | Temporary difficulties in delivery on the Telegram side | | 1401 | gateway-error | Temporary difficulties in delivery on the Telegram side | | 1402 | phone-number-invalid | Incorrect phone number | | 1403 | gateway-error | Temporary difficulties in delivery on the Telegram side | | 1404 | gateway-error | Temporary difficulties in delivery on the Telegram side | | 1405 | ttl-invalid | Incorrect TTL value | | 1406 | gateway-error | Temporary difficulties in delivery on the Telegram side | | 1407 | gateway-error | Temporary difficulties in delivery on the Telegram side | | 1408 | gateway-error | Temporary difficulties in delivery on the Telegram side | | 1409 | gateway-error | Temporary difficulties in delivery on the Telegram side | | 1410 | gateway-ttl-expired | The expired status returned in the message delivery report. TTL expired on the Gateway API side, the message was deleted from the chat | | 1411 | gateway-error | Temporary difficulties in delivery on the Telegram side | | 1412 | gateway-error | Temporary difficulties in delivery on the Telegram side | | 1413 | flood-wait-retries-exceeded | Telegram blocked sending after repeated attempts | | 1414 | submit-retries-exceeded | Telegram did not respond to the request after repeated attempts | | 1415 | gateway-error | Temporary difficulties in delivery on the Telegram side | | 1416 | authorization-code-not-found | The code was not found in the message text | | 1417 | gateway-error | Temporary difficulties in delivery on the Telegram side | | 1418 | phone-number-not-available | Unavailable phone number |