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DLT registration for SMS in India: a step-by-step guide
DLT (Distributed Ledger Technology) registration is the process every business in India must complete before it can send commercial SMS. You register your business, your sender ID (header) and each message template with a telecom operator. Messages from unregistered senders are blocked. This guide explains each step in plain language, and SMSNiti can do the paperwork with you.
Rules are updated from time to time, so we confirm the current requirements with you before you start.
- Entity, header and template
- Common rejection reasons
- Hands-on help from SMSNiti
Overview
What is DLT registration?
DLT stands for Distributed Ledger Technology. India's telecom regulator, TRAI, introduced it to reduce spam and to make sure commercial messages come from genuine, registered businesses. Each telecom operator runs a DLT platform. Businesses register there, and operators check every commercial SMS against those records before delivering it.
Short answer: DLT registration means registering your business (entity), your sender ID (header) and your message templates on a telecom operator's DLT platform. Without it, commercial SMS in India is not delivered.
Who needs it
Any business or organisation that sends promotional, transactional, service or OTP messages to Indian mobile numbers, whether it sends them itself or through an SMS provider. Shops, schools, banks, clinics, apps and delivery companies all need it.
What it protects
It lets customers trust that a message is from a real business, gives them control through consent and DND preferences, and makes spam traceable to its sender.
The process
How to complete DLT registration, step by step
The screens differ between operators, but the sequence is the same.
Register your business as an entity
Create an account on a telecom operator's DLT platform and enter your business details. You are known there as a principal entity.Upload your documents
Submit proof of your business and your authorised person, and wait for the operator to verify them. You then receive your entity ID.Register your sender ID
Request the header, the short name that appears as the sender, for the category you will use. Brand names are checked against your business.Register your message templates
Submit each message as a template with variables for the parts that change. Each approved template gets its own template ID.Register links and callback numbers
Add the website links, app links and phone numbers that appear in your templates so they are allowed through.Connect your SMS provider
Link your entity, headers and templates with your SMS provider so messages can be sent. We do this for you.Get ready
What you usually need to have ready
Exact requirements depend on the operator and your type of business. These are the items most often asked for.
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Business proof: A registration certificate or document that proves your business exists, such as GST, incorporation or shop registration.
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PAN: The PAN of the business, or of the owner for a proprietorship.
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Authorised signatory: The name, ID and an authorisation letter for the person registering on behalf of the business.
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Address proof: A document showing the business address.
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Mobile number and email: Contact details for verification codes during registration.
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Your message wording: The messages you plan to send, so templates can be prepared in advance.
Template categories
Which category does your message belong to?
Templates are registered under a category. The category decides who can receive the message and when.
| Category | What it is for | DND numbers | Example |
|---|---|---|---|
| Promotional | Offers, sales and marketing | Not reached, unless the customer gave consent | "Festive sale: 20% off. Shop now." |
| Transactional | Messages triggered by a customer's action, including OTPs | Reached | "Your order has shipped." |
| Service | Information for customers who already deal with you | Reached | "Your policy renews on 5 May." |
| Government | Official messages from authorised bodies | Reached | Public notices |
Categories and their rules are set by the regulator and may change. We confirm what applies before you register.
Avoid delays
Why templates get rejected, and how to avoid it
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Promotion inside a transactional template: A transactional template must carry no offers. Keep marketing in promotional templates.
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Unregistered links: Links, app downloads and phone numbers must be registered first.
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Unclear or missing sender name: The message should make clear which business it is from.
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Variables used badly: Variables stand for details like names or amounts. Using them for whole sentences is not allowed.
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Generic wording: Vague or misleading text can be rejected. Say what the message is about.
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Wrong category: A message submitted in the wrong category is usually rejected. Choose by purpose, not by convenience.
Promotional messages
Consent, DND and sending hours
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DND register: Customers can block marketing messages. Promotional SMS does not reach numbers that did so.
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Recorded consent: If a customer gives explicit consent to hear from you, that consent can be recorded under DLT so they can receive your promotional messages.
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Sending hours: Promotional messages can be sent only during the permitted hours of the day.
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Opt-out: Customers should be able to stop receiving your messages easily.
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Proof of consent: Keep a record of how and when each customer agreed.
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Check regularly: Rules change, so review your practice at least once a year.
How SMSNiti helps
How SMSNiti helps with DLT
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A clear checklist: We tell you exactly which documents and details to collect.
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Template wording: We draft and review your templates so they are clear and in the right category.
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Registration support: We guide you through each screen and answer questions as they come up.
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Connection to our platform: Once approved, we link everything to your panel or API so you can start sending.
Questions
DLT registration: frequently asked questions
DLT stands for Distributed Ledger Technology. In India, it is the system telecom operators use to register businesses, sender IDs and message templates for commercial SMS.
Yes. Commercial SMS from unregistered senders is blocked in India, whether you send it yourself or through a provider.
It depends on how quickly the operator verifies your documents and approves your templates. Having the right documents ready and well-worded templates avoids most delays.
Some operators charge a registration fee. We will tell you what applies to the operator you choose.
You register once as an entity, then link that registration to the provider you use. If you change provider, you update the link, not the whole registration.
It is the number the operator gives to an approved message template. It is attached to messages so they can be matched against the template.
Variables are placeholders for details that change from message to message, such as a name, an order number or an amount. They are written as {#var#}.
No. A change means submitting a new template for approval. Plan your wording carefully.
To stop spam and fraud, links and phone numbers in messages must be registered. Unregistered ones can cause a message to be blocked.
We guide you through every step and prepare the details, but your business remains the registered entity. Contact us to get started.
Talk to a messaging expert today
Tell us what you want to send and who to. We will suggest the channel and the plan.
