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      • iSlash is Now an Official WhatsApp API Solution Provider [2025 Updates]
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    • Boost Communication: WhatsApp Message Templates Made Easy [2025 Updates]
    • WhatsApp Message Templates with iSlash: A Step-By-Step Guide [2025 Updates]
    • Message Template Undeliverable: Reasons and Solutions [2025 Updates]
    • Supported Media Types and File Sizes on iSlash [2025 Updates]
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    • 2025Q2v1 - WhatsApp Unlocked: Personal, Business, or API?
    • 2025Q1v5 - Click-to-WhatsApp Ads: The Smartest Way to Connect with Customers
  • 2025Q1v4 - Beyond Text: Unlocking Rich Communication with WhatsApp Message Templates
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On this page
  • Common Reasons for Undelivered Messages and Solutions
  • 1. Message Undeliverable (Error Code: 131019 / 131026)
  • 2. Unapproved or Non-Existent Template (Error Code: 132001)
  • 3. Meta Chose Not to Deliver (Error Code: 131049)
  • 4. Business Eligibility Payment Issue (Error Code: 131042)
  • 5. Unsupported Message Type (Error Code: 131051)
  • 6. Template is Disabled (Error Code: 132016)
  1. WhatsApp Messaging Strategy

Message Template Undeliverable: Reasons and Solutions [2025 Updates]

PreviousWhatsApp Message Templates with iSlash: A Step-By-Step Guide [2025 Updates]NextSupported Media Types and File Sizes on iSlash [2025 Updates]

Last updated 3 months ago

When a is undelivered ⚠️, it means the message fails to reach its intended recipient, leading to gaps in communication, whether it’s an authentication code, an important update, or a promotional message.

Common Reasons for Undelivered Messages and Solutions

1. Message Undeliverable (Error Code: 131019 / 131026)

Unable to deliver message reasons can include:

(i) Recipient’s Phone Number Is Not a WhatsApp Number

If the recipient’s phone number isn’t registered on WhatsApp, the message won’t be delivered.

Solution: Verify the recipient’s phone number is correct and registered with WhatsApp. If they aren’t on WhatsApp, try reaching out via SMS or email to encourage them to register on the platform.

(ii) Recipient Has Not Accepted the Updated Terms of Service and Privacy Policy

If the recipient has not accepted WhatsApp’s updated Terms of Service or Privacy Policy, messages will not be delivered.

Solution: Using a non-WhatsApp communication method, ask the WhatsApp user to:

  • Confirm that they can send a message to your WhatsApp business phone number.

  • Confirm they’ve accepted the latest Terms of Service by going to Settings > Help or Settings > Application Information, which will prompt them to accept the terms if they haven’t already done so.

(iii) Recipient Using an Outdated WhatsApp Version

If the recipient is using an outdated version of WhatsApp, they won’t receive messages. The minimum required versions are:

  • Android: 2.21.15.15 or later

  • iOS: 2.21.170.4 or later

  • SMBA: 2.21.15.15 or later

  • SMBI: 2.21.170.4 or later

  • KaiOS: 2.2130.10 or later

  • Web: 2.2132.6 or later

  • Solution: Ask the recipient to update their WhatsApp.

(iv) Sending Authentication Templates to Users in India

WhatsApp currently restricts the sending of authentication templates to users with the +91 (India) country code.

Solution: Use alternative methods like SMS or email-based authentication, for Indian users until this restriction is lifted.

2. Unapproved or Non-Existent Template (Error Code: 132001)

Check if the message template is approved and in the correct language.

3. Meta Chose Not to Deliver (Error Code: 131049)

This can occur if the message is not delivered to maintain a healthy ecosystem engagement. WhatsApp limits the frequency of marketing template messages sent to individual users.

4. Business Eligibility Payment Issue (Error Code: 131042)

There was an error related to your payment method.

Solution: Ensure your billing and payment methods are correctly set up to avoid transaction issues.

5. Unsupported Message Type (Error Code: 131051)

6. Template is Disabled (Error Code: 132016)

Solution: Create a new template with different content.


(v) If you do receive this , suspect it is due to the limit, avoid immediately resending the template message and instead retry at increasing time intervals.

The best practice for using the WhatsApp Business API is to to receive messages from the business.

Solution: Don’t retry sending the message immediately if you receive this error. Instead, retry in increasing time increments until the message is delivered, as the limit may apply for varying periods of time. For more detailed information, refer to WhatsApp’s

Solution: See for supported message types before trying again with a supported message type.

Template has been paused too many times due to and is now permanently disabled.

If you want to know more about error messages, .

error code (131026) for On-Premises API
ensure that customers have opted in
Per-User Marketing Template Message Limits.
Message
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