What is DLT Compliance?

Adherence to India's TRAI-mandated Distributed Ledger Technology framework requiring registration of entities, sender IDs, and message templates before sending commercial SMS.

DLT (Distributed Ledger Technology) compliance is a regulatory requirement introduced by TRAI in 2018 to combat unsolicited commercial communications in India. The framework mandates that all businesses sending commercial SMS must: (1) register their entity on a TRAI-approved DLT platform (such as Vodafone, Airtel, or BSNL's DLT portals), (2) register each sender ID (header) they wish to use, and (3) register every message template with the exact content and variable placeholders. Only messages matching a registered template can be delivered—unregistered content is blocked by operators. The DLT system is blockchain-based to prevent tampering with registrations. Non-compliance results in message blocking and potential penalties. BhashSMS provides a DLT compliance module that simplifies template registration, sender ID management, and automated template ID injection in API requests.

Frequently Asked Questions

Compliance

What are the consequences of sending SMS without DLT registration in India?

Messages sent without DLT-registered templates and sender IDs are blocked by mobile operators before reaching recipients. Businesses risk financial penalties from TRAI, blacklisting of their sender IDs, and reputational damage. All commercial SMS senders in India must complete DLT registration.

Speed

How long does DLT registration approval take?

Entity registration typically takes 24–48 hours. Sender ID registration takes 1–3 business days. Template registration can take a few hours to 1–2 business days depending on the DLT platform and content review. Planning DLT registration well in advance of campaign launch is essential.

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Related Terms

Promotional SMS OTP DND Bulk SMS Sender ID SMS Gateway Priority Route TRAI 2FA

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