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  • October 5, 2019
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Also Check  – DLT Platform 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 v1 below:

101  Missing mobile number

102 Missing message

104 Missing username

105 Missing password
201 Invalid username or password. 201 also appears in case the XML code
triggered is incorrect.

202 Invalid mobile number

203 Invalid sender ID

207 Invalid authentication key

208 IP is blacklisted

209 Default route not found

210 Route could not be determined. Please contact support

301 User does not have sufficient balance to send SMS

302 Expired user account

303 Banned user account

306 This route is currently unavailable

307 Schedule time is incorrect

308 Campaign name cannot be more than 32 characters

309 Selected group(s) does not belong to you

310 SMS is too long. System paused this request automatically

311 When 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.

418 IP not whitelisted

506 Internal error, please contact your account manager

601 Internal error, please contact your account manager

602 Your current route is disabled, kindly select another route

603 This sender ID is blacklisted, please use a different sender ID

604 Please enter at least one correct number to send SMS

606 Scheduled date cannot be more than three weeks

607 Please enter campaign name

608 Scheduled SMS cannot be less than current end time

Also Check  – DLT Platform Error codes

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What is bulk messaging? How does bulk SMS help your business?

Bulk SMS also referred as bulk messaging simply means sending out a large number of SMS for delivery to targeted mobile numbers. A good bulk SMS Service provider will make the process of sending out these many messages easy with the click of a button. Bulk SMS helps businesses and enterprises to send out important information to their customers. Bulk messaging is widely used for transactions, promotions and mobile marketing.

What’s the difference between transactional and promotional SMS?

Transactional SMS are those that the users have opted to receive and they are usually generated by machine/API whereas promotional SMSs are bulk messages not specific to optin users. 

What are the benefits of bulk SMS for business?

Most businesses usually look for cheap bulk messaging, free bulk SMS or cheap SMS Service provider in India. What they don’t realize is bulk messaging by default is less expensive than any other medium of transactional or promotional communication. The following are the benefits of messaging that’s how business can use bulk SMS services–

  1. Sending of personalized and customized information
  2. Brand awareness to existing users or new users
  3. You can send critical alerts to users. Stock markets and banks use SMS service widely for this purpose.
  4. This is an effective tool for internal or organizational communication
  5. It is still the fastest way to delivery any kind of information.
  6. Automation within a business is not possible without online SMS services.

How to choose the best bulk messaging partner?

A good messaging partner will care for your recipients as much as you do. The following can be the parameters to choose the best Bulk SMS Service provider–

  1. Easy API: Sending bulk SMS to lakhs of recipients must come in handy. Your bulk SMS gateway provider must give you a very easy API or admin panel that disseminates SMS via its SMS gateway in a blink.
  2. Sure-shot SMS delivery: The best bulk SMS partner will have re-routing of messages so effectively that each recipient receives the message come what may.
  3. Add-ons: A convenient bulk SMS solutions company should have easy add-ons. For instance, C2SMS various add-ons like bulk sms excel plugin, bulk sms mobile app, rewarding reseller program etc will give you endless opportunities to make your business communication easy, smooth, productive and easy on pocket.
  4. International bulk SMS service: The best bulk messaging provider will give you international bulk SMS gateway facility by default. C2SMS gives you bulk international sms service in 190+ countries across various sectors and industries.

Does C2SMS have dedicated OTP service and does it supports International SMS?

Yes,  we do have OTP sms for International with voice otp backup.

Is DLT mandatory and can I able to send SMS with DLT registration ?

Yes,  DLT registration is mandatory, and you can still able to send API sms with our default sender id for few days.