--- updatedAt: 2026-10-05T05:41:35.000Z agentTools: projectIndex: https://developers.kaleyra.io/llms.txt --- # SMS Status and Status Trace Codes This document provides information about the status and status trace codes you would receive when executing the SMS REST APIs. | Status | Status Trace | Description | | :------------ | :-------------------------- | :--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | | NOT-SENT | NOTALLOWED | Country not enabled. | | NOT-SENT | NO-CREDITS | Insufficient credits. | | NOT-SENT | SERIES-BLOCK | Mobile number series blocked. | | NOT-SENT | KLR-INV-NUMBER | The recipient mobile number is invalid. | | Undelivered | INV-NUMBER | The recipient mobile number is invalid. | | Undelivered | SERVER-ERR | Server error. | | NOT-SENT | SPAM | Spam SMS. | | NOT-SENT | BLACKLIST | The mobile number to which you want to send is blacklisted. | | NOT-SENT | CON-DND | The Contact is marked as DND. | | NOT-SENT | INV-MOB-PATTRN | The recipient mobile number is invalid. | | NOT-SENT | TEMPLATE-NOT-FOUND | Template not mapped. | | NOT-SENT | INV-TEMPLATE-MATCH | Template not matching approved text. | | NOT-SENT | SENDER-ID-NOT-FOUND | Sender ID not found. | | NOT-SENT | NOT-OPTIN | Not subscribed for opt-in group. | | NOT-SENT | OUTPUT-REJ | Unsubscribed from the group. | | NOT-SENT | OPT-OUT | Message cannot be sent. Because the recipient has opted-out. | | NOT-SENT | REJECTED-MULTIPART | Validation fail \[SMS over 160 characters]. | | Undelivered | SNDRID-NOT-ALLOTED | No sender ID is allotted. | | NOT-SENT | DNDNUMB | DND registered number. | | Undelivered | INVALID-SUB | Number does not exist. Failed to locate the number in HLR database. | | Undelivered | ABSENT-SUB | Telecom services not providing service for the particular number or Mobile Subscriber not reachable. | | Undelivered | HANDSET-ERR | Problem with Handset or handset failed to get the complete message or Handset does not support the incoming messages. | | Undelivered | BARRED | End user has enabled message barring system or Subscriber only accepts messages from Closed User Group \[CUG]. | | Undelivered | NET-ERR | Operator of subscriber is not supported or Gateway mobile switching error. | | Undelivered | MEMEXEC | Handset memory full. | | Undelivered | FAILED | SMS expired due to roaming limitation or Failed to process the message at operator level. | | Undelivered | MOB-OFF | Mobile handset in switched off mode. | | Undelivered | HANDSET-BUSY | Subscriber is in busy condition. | | Undelivered | SERIES-BLK | Series blocked by the operator. | | Undelivered | EXPIRED | SMS expired after multiple re-try. | | Undelivered | REJECTED | SMS rejected by operator. | | Undelivered | UNDELIV | Network issues. | | SENT - NO DLR | NO-DLR-OPTR | Sent. | | SENT - NO DLR | NO-DLR-OPTR-PROMO-IN | Operators in India do not share a delivery report for submitted SMS which are sent to India Promotional Route with Numerical Sender ID. | | Delivered | DELIVRD | Message successfully delivered to the user. | | SUBMITTED | ENROUTE | Message submitted to operator. | | NOT-SENT | MOB-NOTALLOWED | Number not allowed for sender. | | NOT-SENT | NUM-LIMIT | Message-cap Overrun. | | NOT-SENT | DUPLICATE | SMS not sent as duplicate check limit exceeded. | | NOT-SENT | BLOCKED-COUNTRY | You are not allowed to send to this country as it is blocked for your account. | | Undelivered | REJECTD | SMS Rejected by operator. | | NOT-SENT | INF-CREDIT | Insufficient credits. | | NOT-SENT | BILL-ERR | Bills service failed to respond. | | Undelivered | TL-NT-MTCHD | The template does not match the template registered on the DLT platform. | | Undelivered | SDR-TL-MSMAT | The sender ID used along with the template ID does not match the registration in DLT portal. | | Undelivered | TL-NT-FOUND | The message content sent was not found in the DLT platform as a registered template. | | Undelivered | TL-LMT-EXCED | The variable content sent exceeds the allowed limit. | | Undelivered | TL-BLKLST | The message template pushed has been blacklisted at the DLT platform level. | | Undelivered | TL-INACTIVE | The message template sent is in inactive status at the DLT platform level. | | NOT-SENT | URL-SHRT-FAILED | SMS not sent as URL shortening failed. Please contact support team at . | | NOT-SENT | URL-NT-SENT | SMS not sent as replaceable URL details not sent in API. | | NOT-SENT | URL-VAR-NT-FOUND | SMS not sent as URL replaceable variable `{URL}` not found in the body. | | NOT-SENT | KL-TEMPLATE-ID-NOT-FOUND | SMS not sent as matching template ID not found for content. | | NOT-SENT | KL-TEMPLATE-ID-UNREGISTERED | SMS not sent as template ID is not registered. | | NOT-SENT | KL-INV-CALLBACK | Invalid callback object. | | NOT-SENT | KL-CALLBACK-URL | URL field is mandatory in callback object. | | NOT-SENT | KL-INV-CALLBACK-URL | Invalid callback URL. | | NOT-SENT | KL-INV-CALLBACK-METHOD | Method field is mandatory in callback object. | | NOT-SENT | KL-INV-CALLBACK-METHOD-TYPE | Only GET and POST methods are allowed for callback. | | NOT-SENT | KL-INV-TEMPLATE-ID | Invalid DLT template ID. | | NOT-SENT | KL-INV-ENTITY-ID | Invalid DLT entity ID. | | NOT-SENT | KL-INV-BODY | Invalid message body. | | NOT-SENT | KL-INV-PORT | Invalid message port. | | NOT-SENT | KL-INV-UNICODE | Invalid value for Unicode parameter. | | NOT-SENT | KL-INV-FLASH | Invalid value for flash parameter. | | NOT-SENT | KL-INV-URL-SHRTN-DATA | Invalid url\_data input. | | NOT-SENT | KL-INV-REF | Invalid ref value. | | NOT-SENT | KL-INV-REF1 | Invalid ref1 value. | | NOT-SENT | KL-INV-REF2 | Invalid ref2 value. | | Undelivered | INV-ENTIY-ID | The Entity ID that customer used is Invalid. | | Undelivered | PRFT-NT-MTCH | This error code is received for Service Explicit content only. When the end-user is registered under DND. This is completely based on the DND preference selected by the end-user. | | Undelivered | SNDR-NT-REG | Sender ID is not registered in the DLT Platform. | | Undelivered | TL-ID-INVLD | The template ID that customer using is Invalid. | | Undelivered | SUBMIT-FAIL | Submission to Operator failed. | | Undelivered | SNDR-NT-REGD | Sender ID is not registered in the DLT Platform. | | NOT-SENT | MASKING-MISMATCH | Message Content has Unicode or Mask parameters do not match body. | | NOT-SENT | TIME-OUT-PROM | Marketing Campaign can only be sent from 10am to 9pm. | | NOT-SENT | MAX-LIMIT | The message could not be delivered as it exceeded maximum character limit. | | NOT-SENT | CUTOFF-REACH | Outside send window. | | NOT-SENT | SMS-LIMIT-REACHED | SMS Not Sent as SMS-Limit has been reached. | | Sent - No DLR | SENT | Waiting for DLR. | | Undelivered | SNDR-NT-MTCH | Sender & entity mismatch. | | NOT-SENT | TOKEN-NOT-FOUND | Token not found. | | Undelivered | URL-NT-REG | URL not whitelisted. | | Undelivered | PE-BD-NT-REG | PE bind not registered. | | NOT-SENT | KYC-NOT-APPROVED | KYC not approved. | | Undelivered | DNDNUM | DND registered number. | | NOT-SENT | BILL\_ERR | Bills service failed to respond. | | Undelivered | UNIDENTIFIED-SUB | The subscriber could not be identified by the operator. | | Undelivered | ILLEGAL-SUB | The subscriber is not allowed to use the requested service due to regulatory or operator restrictions. | | Undelivered | GATEWAY-ERROR | An error occurred in the gateway. | | Undelivered | DLT-SCRUB-ERROR | Message blocked due to DLT scrubbing failure. | | Undelivered | TM-ID-NOT-REGISTERED | The telemarketer ID is not registered on the DLT platform. | | Undelivered | TM-IN-ACTIVE | The telemarketer ID is inactive on the DLT platform. | | Undelivered | TM-BLACKLISTED | The telemarketer ID is blacklisted on the DLT platform. | | NOT-SENT | NO-CONSENT | No consent provided. | | NOT-SENT | CONSENT-NUMBER-DEACTIVATED | Number deactivated. | | NOT-SENT | CONSENT-NOT-FOUND | Consent not found. | | NOT-SENT | CONSENT-API-ERROR | Consent API failed. | | NOT-SENT | DEMO-MOB-NOTALLOWED | Demo restriction. | | Undelivered | KL-REQUEST-EXPIRED | Request expired. | | Undelivered | KL-CONFIG-NOT-FOUND | Config not found. | | Undelivered | KL-INTERNAL-BILL-API-FAILED | Billing API failed. | | NOT-SENT | GATEWAY-REJECT | Gateway rejected. | | NOT-SENT | SVC-EXP-TIME-OUT | Promo service timeout. | | Undelivered | FCLT-NT-SUP | Recipient does not have an active SMS subscription. |