WhatsApp Error 131026: Message undeliverable

What this means#

The message could not be delivered to the recipient.

Why it happens#

• Recipient doesn't have WhatsApp.
• Recipient hasn't accepted the latest WhatsApp terms.
• Recipient is on an outdated app version.
• Recipient's phone has been off/unreachable for a long period.

How to resolve it#

Confirm the recipient has an active, up-to-date WhatsApp account; consider an alternative contact channel.

Learn more#

See Meta's official reference for WhatsApp error code 131026.

Still stuck?#

If the error persists after trying the steps above, note the exact error code (131026) and reach out to support with the message details — the code tells us exactly what WhatsApp rejected.