---
title: Under Which Category Should I Register My OTP Templates on the DLT Portal?
description: "When registering your OTP (One-Time Password) templates on the DLT (Distributed Ledger Technology) portal, choose the **[Service Implicit](https://www.smsgatewaycenter.com/service-implicit-sms/)** category. This ensures your OTP messages are correctly classified and delivered seamlessly, even to users on the DND (Do Not Disturb) list,…"
url: "https://www.smsgatewaycenter.com/blog/kb/under-which-category-should-i-register-my-otp-templates-on-the-dlt-portal/"
updated: "2025-03-05"
category: Bulk SMS / Integrated OTP SMS
---

# Under Which Category Should I Register My OTP Templates on the DLT Portal?

When registering your OTP (One-Time Password) templates on the DLT (Distributed Ledger Technology) portal, choose the **[Service Implicit](https://www.smsgatewaycenter.com/service-implicit-sms/)** category. This ensures your OTP messages are correctly classified and delivered seamlessly, even to users on the DND (Do Not Disturb) list, as per TRAI (Telecom Regulatory Authority of India) guidelines.

## Why Service Implicit for OTP Templates?

- **Nature of OTPs:** OTPs are critical, time-sensitive messages (e.g., “Your OTP is 123456, valid for 5 minutes”) that don’t require explicit user opt-in. Consent is implied when a user initiates an action like logging in or making a transaction.
- **Delivery Advantage:** Service Implicit messages are exempt from DND restrictions, guaranteeing they reach all recipients—essential for authentication workflows.
- **DLT Compliance:** Selecting this category aligns with TRAI’s rules for transactional SMS, avoiding delivery failures or rejections.

### How to Register on the DLT Portal:

1. Log in to your DLT platform account (provided by your telecom operator).
2. Navigate to the template registration section.
3. Create your OTP template (e.g., “Your OTP for [service] is {OTP}. Valid for {time}.”).
4. Under the category dropdown, select **Service Implicit**.
5. Submit for approval.

Check out **[DLT Registration Guide](https://www.smsgatewaycenter.com/dlt-sms/)** for more information.

#### Pro Tip:

Avoid registering OTP templates under **[Service Explicit](https://www.smsgatewaycenter.com/service-explicit-sms/)** or **[Promotional SMS](https://www.smsgatewaycenter.com/promotional-sms/)** categories, as these are meant for opt-in updates or marketing messages and won’t deliver to DND numbers without explicit consent. **Stick to Service Implicit** to keep your **OTP flow smooth and compliant**!

Need more help with DLT registration? Explore our resources or log in to **SMSGatewayCenter** to integrate your approved templates with our **[Generate OTP API](https://www.smsgatewaycenter.com/developer-api/generate-otp/)**today!

### More Related Articles

- [What’s the Difference Between OTP SMS and Integrated OTP SMS on SMS Gateway Center?](https://www.smsgatewaycenter.com/blog/kb/whats-the-difference-between-otp-sms-and-integrated-otp-sms-on-sms-gateway-center/)
- [How Can I Resend an OTP if Users Don’t Receive It After the First Few Attempts?](https://www.smsgatewaycenter.com/blog/kb/how-can-i-resend-an-otp-if-users-dont-receive-it-after-the-first-few-attempts/)
- [Can I Use Integrated OTP SMS in Mobile Applications?](https://www.smsgatewaycenter.com/blog/kb/can-i-use-integrated-otp-sms-in-mobile-applications/)

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