TRAI mandates DLT registration for all Indian SMS traffic. Learn how template variable scrubbing and header approval prevent total message rejection.
The Telecom Regulatory Authority of India (TRAI) mandates that all commercial SMS messaging operate through Distributed Ledger Technology (DLT) platforms (such as Jio, Airtel, or Vil DLT). Messages that fail to match registered templates character-for-character are rejected immediately by carrier scrubbers.
1 DLT Regulatory Architecture
To deliver SMS in India, senders must register three components:
1. Principal Entity (PE): Verified business identity registered with TRAI.
2. Headers (Sender IDs): 6-character sender codes approved for explicit use-cases.
3. Content Templates: Exact text templates registered with {#var#} replacement variables for dynamic passcodes.
Frequently Asked Questions • Telecom Regulations & A2P 10DLC
The Indian carrier's telecom gateway rejects the message instantly with failure code 'Template Mismatch' before it ever reaches the handset.