🚫 Error: Message Undeliverable

When attempting to send a WhatsApp message through QuickReply.ai, users may occasionally encounter the error with error-code as 131026 and error message as "Message Undeliverable".

This means that Meta (WhatsApp) rejected the message before delivery — it was never delivered to the recipient’s WhatsApp account.

❓What Does “Message Undeliverable” Mean?

WhatsApp returns this error (error code 131026) when the platform is unable to route the message to the destination number. This is not a QuickReply.ai failure — the block originates from WhatsApp itself.

🔍 Why This Error Happens — As per Meta

The official Meta error code related to this is:

Error Code	Description from Meta	Reason
131026	Message Undeliverable.	Unable to deliver message.

Meta lists the following possible causes for undeliverable messages:

Reason	Explanation
Primary reason 📱 Number is not a WhatsApp number	The phone number doesn’t exist on WhatsApp
⚠️ User has not accepted latest Terms & Privacy Policy	The recipient must accept the updated Terms inside WhatsApp
⏳ Old WhatsApp version	The recipient is using an outdated WhatsApp app and must update
❌ Temporary WhatsApp account restriction	In rare cases, recipient account may be flagged or temporarily limited

Read full details on this error on Meta's documentation here https://developers.facebook.com/documentation/business-messaging/whatsapp/support/error-codes

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🛠️ How to Fix It

This issue can only be resolved by the recipient. QuickReply.ai or your team cannot fix it from the dashboard.

• If the number is not on WhatsApp

  • Ask the user to:

    • Share their correct WhatsApp number, OR

    • Install WhatsApp on their existing phone number and activate it

    Messages will start working once the number is registered on WhatsApp.

• If the version is outdated

  • Ask the user to update WhatsApp to the latest version from Play Store / App Store

• If Terms of Service / Privacy Policy are not accepted

  • Ask the user to to accept the latest Terms of Service or Privacy Policy

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🔔 Final Note

This is not a technical fault from QuickReply.ai — the message is successfully sent from our side to WhatsApp, but WhatsApp rejects the delivery due to the recipient’s account status.

Once the recipient resolves the issue from their side, all messages will begin delivering normally.