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Overview
DLT Registration
Step by Step Guide to implement DLT in SMS
DLT Consent Template Registration
CTA Whitelisting | FAQs
Error Description- SMS not Matched with DLT Template.
DLT key points for B2B platforms
DLT Template Scrubbing / Filtering Rules
Map your DLT Entity (PE) Id with DLT approved Header (Sender Id)
Export Approved Templates from DLT Portal
Map SMS Content Template on MSG91 API/Panel
Error Description- 211- Template Id Missing
DLT Process
DLT Consent Process
Map approved DLT Template Id with respective Flow Id on MSG91 panel
Header Template Verification
Entity Registration on DLT Platform
DLT Header Registration | Process Manual | PingConnect
Error Description- Template Id not found on DLT
Find your DLT Entity (PE) ID
FAQ- DLT Consent Process 
DLT Content Template FAQs
DLT | FAQs
Get Approval for your SMS Content on DLT Platform
Error Description- Header/Sender Id not Associated with the DLT Template
DLT Entity Process | Post Entity ID Received
DLT Debugging Checklist
Apply Consent Template | DLT
How to use DLT AI and what is the use of DLT AI 
DLT Premium Support
DLT Premimum 
How to Whitelist URLs and Callback Numbers on DLT
PE-TM Chain Binding on DLT
Error Unsubscribe Link
WhatsApp
CleverTap WhatsApp Connector
WhatsApp Subscription
How to turn off the 2-factor authentication
Whatsapp Welcome message, Icebreakers and Commands
WhatsApp- Template Pacing
WhatsApp Solutions
Whatsapp All features
WhatsApp Payment Flow
Whatsapp media type Support
How To Get your business account verified on WhatsApp?
How to download Whatsapp Reports
Where to check the Failed logs for Whatsapp messages?
How to get reports of Whatsapp messages on Webhook
How to check if your account is verified on Meta or not?
How to apply for WhatsApp Green Tick Verification?
WhatsApp Catalog
WebEngage WhatsApp Integration
Send WhatsApp
How to create a template for WhatsApp?
Error Codes for Whatsapp
WhatsApp Interactive Message
Click Count Functionality
Prepaid Balance and Auto renew
MoEngage WhatsApp Integration
WhatsApp Authentication/ WhatsApp OTP
API
Why integrate MSG91 API using Socket?
What do you mean by API Security?
How to send + sign in SMS from API?
How to debug if my API is not working?
Where can I find my authentication key?
How to get SMS status in API?
How do resolve the error OTP not found and placeholder not found in the message?
What do you mean by API Security?
How can I integrate SMS API
What are the reason for error codes received under the API failed?
Error: Country Code Blocked
Where can I find my authentication key?
SendOTP
What is SendOTP? How does it work?
How to create a template to Send OTP.
How does SendOTP implement the verification process? Is it secure as SendOTP itself generates the code and verifies it?
What is the maximum and minimum OTP expiry time?
Where to find SendOTP reports?
How to export OTP reports?
How OTP can be sent in other languages (Unicode)?
What is the difference between Send OTP and Send OTP 2.0?
How to integrate the new Login with OTP widget
Step-by-step process to configure OTP
How to Send OTP Though Magic Link
Text SMS
What is a .csv file?
What does a flash SMS mean? How is it different from the regular SMS?
What is the difference between the Transactional, Promotional, and SendOTP routes?
How can I schedule an SMS? Where can I see its delivery report?
How to add or delete an SMS template?
How can I check my balance?
How can I send personalized/custom SMS?
How to move the balance from one route to another?
How to send SMS using an Excel file from the Send SMS option?
How to send SMS to the group?
How do switch routes for sending SMS from the dashboard?
How to send encrypted SMS?
What is an SMS campaign, its uses, and how to delete the old campaign name?
How to send SMS worldwide?
How can I convert my Excel file to CSV?
DND Error while send Transactional or OTP messages
How to send SMS from my MSG91 dashboard?
How to send + sign in SMS from API?
My account status is in the demo, what can I do to make my account live?
How to use MSG91 SMS Connector for MoEngage:
What is Unicode and which characters come under Unicode?
How can you add/remove a signature along with the SMS?
How to send Unicode custom SMS by CSV?
How to add emojis or send messages in other languages (except English)?
How to delete/cancel the scheduled SMS?
How to resend SMS via panel?
Where to find my Template ID for MSG91 API?
Step-by-step process to configure SMS 
Schedule SMS in new dashboard
Why Single and Double Decoding is required
How to search the templates
Play the SMS requests paused due to the error 301
Sender ID
How to Add, Update, or Delete a sender ID (header) on MSG91?
What are the supported types of Sender IDs and the ETA for different countries? 
What is the meaning of prefixes like DZ, DM, IZ, etc.?
What is a Sender ID?
Country-wise SMS and Sender Id Rules
HELLO Contact Center
RCS client registration and sending invite
How to integrate ChatBot with Hello
What is Hello?
How to integrate WhatsApp in HELLO?
New Article
Get Started With Workflow
How to configure VPN in Hello for making Voice calls?
How to check Analytics in Hello?
How to close/snooze bulk tickets in Hello Inbox?
What are the notification settings in Hello? 
Google Business Chat Inbox
How to integrate WhatsApp in HELLO? 
Integrate Instagram in Hello
How to use Hello in mobile app
How To Integrate Twitter Inbox
How to use Hello for ticketing system
How to use tags in email inbox
Getting started with HELLO - Quickstart guide
How to integrate the Hello-Chat Widget?
How to set up forwarding for Hello Inbox?
Summarize chats in Hello
Sticky Assign
Set the API in the Bot
How to Integrate SMTP Service in HELLO Inbox?
Calling in Hello Mobile -IOS
SMTP Outlook Inbox in Hello
Inbox Filtering by Last reply
How to create ChatGPT Bot
Hello Facebook Inbox Error
How to do Facebook Integration with Hello
Filters in Hello
How To Integrate Gmail Inbox
How to see the reaction to a specific chat on WhatsApp inbox in Hello?
Paraphrase the reply in Hello
Feedback setting in Hello Inboxes
New Article
Text Translation
Identity verification in Hello
Interactive message in Hello
Spam Forwarding in Gmail
Delay Response
Permission Setting in Hello
Spam Forwarding in Gmail
Jump to Condition in Lex Chat-bot
How to create MSG91 Bot
S3 bucket
How to integrate the Hello-Chat Widget
Transactional Email
All You Need to Know about Transactional Email of MSG91
How to create a transactional email template with API Integration detail 
How to Add Domain in MSG91
How to complete domain verification ?
How to check transactional email delivery reports?
How to subscribe to email services
Transactional email being received in the spam or promotional folder.
How to validate your recipient email address 
How to check and export delivery reports for Email
How to get Email delivery logs on Webhook
Step-by-step process to configure Email API in MSG91
How to use SMTP in MSG91
DMARC Settings in Email
Remove mails from suppressions
How to add a Preheader in your Email
How to configure SMTP on Zoho platform
Best practices to increase email deliverability
How to create Email Template in MSG91 with Builder
MSG91 Email Subscription and Charges
IP Security Feature in SMTP services
All
What is URL encoding and how do URL encoding?
What is blocked numbers? How to block/unblock any number?
What is the meaning of SSL certificate error?
Step-by-step guide to set up and start your Cloud Communication with MSG91
How can I get delivery logs for a particular number & the failure reason?
Alternate Solution for CSV file Upload
How to fix the "could not create SSL/TLS secure channel" error
How to block country in a credit account
Delivery Report
How to export/download the Delivery Reports
Where can I check the SMS delivery reports?
What is the meaning of different statuses in the delivery reports?
How can I get a report for a particular number?
How to automate your reports via Dashboard?
I am unable to see the delivery report of the failed API. Where can I find them?
What is a request ID and where can I get it?
What is an Absent subscriber?
What are the reasons behind a failed message?
How to export the DLT failed report
More
How to resolve the error cURL Error: Failed to connect to msg91.com port 80/443: Connection timed out?
How to add a new team member to the team?
What is the difference between free and paid SMS services?
What are the best Accounting and Invoicing softwares you would recommend?
How can I change my username and registered mobile number?
What is Fallback and how does it work?
What is the difference between Push SMS and Pull SMS?
I am facing trouble viewing all the options on my screen. What should I do?
Can I get an SMS alert daily informing me about the available and used balance in my account?
How to request any custom SMS solution?
How to give access to your MSG91 account to support team, in order to troubleshoot on an issue
How to delete access of a member added to your team?
CORS ERROR
Promotional SMS to Customers
Static IP Resolution on Various Cloud Providers
What are third-party services?
How can I update my primary mobile number?
How to download and use MSG91 mobile application?
How can I update my GST number?
How to create a Google Group?
What is a switch account and how to use it?
What are website and data security with MSG91?
How to export all client details?
What is UserTABLE? How to use it?
How can I contact Support
Billing and Tech Alerts
Rules and Permission
Add ons and Plug ins
Google Spreadsheet- How to send SMS, Email, and Campaign.
WordPress and Woo-Commerce- How to send notifications and OTP SMS
How to Migrate from Twilio to MSG91?
Google spreadsheet in MSG91 Dashboard- How to use 
Freshworks- How to integrate the MSG91 plugin in Freshworks
Google Spreadsheet- How to send MSG91 Campaign
Leadsquared- How to integrate the MSG91 plugin in Leadsquare
Excel- How to use the Excel plugin for sending campaign
Zapier Integration- How to send data to Segmento in MSG91 from your app via Zapier
Google Spreadsheet- How to send SMS
HubSpot - Integration with MSG91
How to add MSG91 as an Email Service Provider in Clevertap
Zapier Integration- How to send SMS
How to send SMS from the MSG91 mobile application?
Excel plugin- How to send SMS
Magento extensions for sending SMS notifications and OTP
Excel plugin- How to resolve the error authentication failure and no internet connection
SM-share plugin for SMS notifications and OTP with MSG91
SAP- How to integrate MSG91 API
WHMCS plugin for SMS notification and OTP
Excel plugin- How to resolve an Invalid range instance error
How to check the Unicode message in the excel file exported?
WebEngage- How to send SMS with MSG91
Google Spreadsheet- What to do if the MSG91 Add-On option is not available in the Plugin after installation?
OpenCart plugin for SMS notification and OTP
MSG91 WHMCS SMS plugin- How to track if SMS is not sent
Google Spreadsheet- How to send Emails
Zapier MSG91 Integration- Send Whatsapp, Email, Voice, and SMS
Shopify- How to integrate with MSG91
Shopify- How to recover abandoned checkouts using WhatsApp Messages
Zoho CRM + MSG91 - Send Whatsapp, SMS, Voice, and RCS alerts.
How to send messages to users who have viewed the product but have not purchased it (Browse Abandonment)
Sync Shopify data with Segment
Zoho-CRM-Automation
Integrating MSG91 with The Weeky
Best Practices
How to Allow and Block specific countries from sending SMS
How to check Active Login Session
How to protect your SMS API from Bot Attack!
What is token and how to use it?
What best practices need to be performed for bulk SMS service?
How to block countries on the basis of SMS price?
Login using Whitelisted IP address
Flow
Does Template in the flow require approval? How many templates can we add?
How to create a Template ID to Send SMS via API?
How Flow can be stopped?
Voice
Call Masking or 2 Way call
How to use Voice Services
Call Monitoring
How to use Incoming Services
How to use Outgoing Services
Number Subscription
VPN in Chrome OS
Voice Redesign Template Change
Voice Wallet
What is Flow and its creation
URL shortener
How to use and check the report of a short URL?
How to check the URL Shortener report?
CTA Whitelisting Solution for Redirecting URLs
Webhooks
How does the requestbin work? How to check if the webhook for DLR is working?
What are Webhooks? How does it work?
How to use Webhook to get the delivery report on the desired URL?
Campaign
What is Campaign and how to use it
Where to find the Campaign slug
How to check the reports of the campaign?
What are Campaign filters?
How to run a Campaign from Segmento
Contact limit feature
Campaign API Failed Logs
Campaign Features
Integration guides
Zoho Campaign- How to integrate MSG91 API?
MSG91 WHMCS SMS Plugin- How to configure
MARG software- How to integrate MSG91 API
How to integrate MSG91 API in ERP Next?
Cs-Cart- How to configure MSG91 with Cs-Cart?
Zoho CRM
Zoho Subscription-  How to integrate with MSG91?
Vtiger CRM plugin with MSG91
HDPOS software- How to integrate MSG91 API
How to send SMS in WebEngage with MSG91
How to integrate with Busy software
Zoho Books- How to integrate with MSG91 ?
How to send SMS in Clevertap with MSG91
Integrate Tally with MSG91
Credits
How to make refund request? How much time does it take to refund the payment?
How to add funds?
How to create an e-mandate for auto-recharge?
What is the character limit for a single credit in English & Unicode? How is credit calculated?
What is the charge per SMS? Are failed SMS also charged?
Where can I download the Invoice/Ledger?
How do make a payment using a Debit/Credit card?
Resellers
How to get signup updates on your webhook?
How do I white label my website? How to point CNAME for the domain or subdomain?
How can I add Demo Balance to my clients?
How to add clients under the reseller panel?
How to have my own website for selling SMS?
How does client search work?
Why am I unable to pay online? It says, "You are not authorized".
How to edit client details?
Client SMS Consumption
How can I update my client's mobile number?
How can I update my client password?
How can I customize a mail and an SMS for signup?
How do you give support to our Whitelabel clients?
How to add Balance to the client account?
How to create and design a website for selling SMS?
How to mark a user Authentic?
How can I add pricing to my website?
Dynamic Credit Purchase Limit
How can I get a Reseller account on MSG91?
How can I disable my client's account?
Can my clients also pay me online? If yes, then how?
I have disabled a reseller under me. Does it disable all users under that reseller?
How can I put the bank details like MSG91 on my website?
How can I convert my client's account into a reseller account?
How to set pricing for the client account?
How to restrict users to log in to other domains?
How to add SSL to my website?
How to add clients under reseller panel?
Reseller Short URL
How to update a client’s phone number
Virtual Number
What is a Virtual Number or Longcode? What is Keyword and Inbox balance?
I am not able to receive SMS when someone sends it on my keyword. Why is that so?
What is the difference between Dedicated Long-Code and Shared Long-code
How to send custom SMS using Longcode?
Where I can add new keyword for longcode? What is it's maximum limit?
Is it possible to export report for a particular keyword?
How to activate a Long Code?
Segmento
4 steps to setup Segmento
How to create a Segment in Segmento
How to use phonebook in segmento
How you can use the Phonebook in Segmento to send the SMS.
How to create the Phonebook in Segmento
Segmento User Event
Push Notification
How to use Push Notifications on MSG91
Push Notification and Features
KnowledgeBase
KB main doc
Email
Warm Up in Email Sending
Webhook for Email Activities
Email's Master Article
Email Connections
PE-TM Chain Binding on DLT
RCS
RCS Form Registration Guide
RCS Template Creation
Wallet
Wallet Guide
Wallet: Bonus Balance Addition and Deduction
Wallet: Check Balance Deduction from Delivery Logs
Phonebook
How to upload contacts to a group?
How to add a group for phonebook? How many contacts can I import/upload at once?
How can I set the default expiry of any number in the phonebook?
How to delete selected contacts from a phonebook group?
Can I copy or move contacts from one group to the other?
How can I set default expiry of any number in phonebook?
How to export existing phonebook data and upload it on segmento
How to delete a phonebook group?
How can I export contacts from a single group?
Startup
What is MSG91 Startup program and how to apply for it?
Files
All You Need to Know about File Hosting option of MSG91
AMP Emails
Whitelisting for AMP Emails
Hello Mobile Application
Hello Mobile Notification

What are the reason for error codes received under the API failed?

ERROR CODES

Error codes are displayed if there's an issue in the message sent by you. Click on the respective code to find out the reason for failed SMS and also to know what that particular code means.

You can also find the reasons for all the error codes for API below:



101Missing mobile number
102Missing message
104Missing username
105Missing password
201Invalid username or password. 201 also appears in case the XML code triggered is incorrect.
202Invalid mobile number
203Invalid sender ID or DLT Entity Id Missing
207Invalid authentication key
208IP is blacklisted
209Default route not found
210
The route could not be determined. Please contact support
211DLT Template Id Missing
301The user does not have sufficient balance to send SMS
302Expired user account
303Banned user account
306This route is currently unavailable
307The schedule time is incorrect
308Campaign name cannot be more than 32 characters
309The selected group(s) does not belong to you
310SMS is too long. The system paused this request automatically
311When the same SMS content is sent to the same number within 10 seconds. This is a security feature used to avoid multiple deliveries. The first SMS will be delivered and the second will be rejected. The balance will also be deducted only once.
400Flow ID Missing or Invalid Flow
401Flow Not Yet Approved
402The message has some hard block keywords.
403Flow is disabled
418IP not whitelisted
421Service Terminated (Please reach out to your account manager or write to [email protected])
506Internal error, please contact your account manager
601Internal error, please contact your account manager
602If your current route is disabled, kindly select another route
603This sender ID is blacklisted, please use a different sender ID
604Please enter at least one correct number to send an SMS
606The scheduled date cannot be more than three weeks
607Please enter the campaign name
608Scheduled SMS cannot be less than the current end time

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