2 min readUpdated Oct 5, 2026troubleshooting, error code, whatsapp
Troubleshooting WhatsApp Errors
How to read and resolve WhatsApp error codes in LeadPattern — every code is a searchable article with what it means, why it happens and how to fix it.
When WhatsApp can't deliver a message or accept a request, it returns a numeric error code. LeadPattern surfaces that code on the failed message so you can see exactly what went wrong. Every code has its own article here — explaining what it means, why it happens, and how to resolve it.
Where you'll see error codes
- On a failed message in the inbox — the status shows the code and a short reason.
- In API responses when sending programmatically — the error body includes the code.
- In webhook
message_status_updateevents for messages that fail after sending.
How to read an error
Each error article answers three questions:
1
What this means
A plain-language explanation of the error.
2
Why it happens
The common causes behind the code.
3
How to resolve it
The concrete steps to fix it.
Common errors
131026 — Message undeliverableThe message couldn't be delivered to the recipient.131047 — Re-engagement messageOutside the 24-hour customer service window.131049 — Per-user marketing limitMeta limited marketing messages to this user.130472 — User not in allowed listRecipient is part of an experiment / not eligible.100 — Invalid parameterA request parameter was wrong or misspelled.0 — Authentication errorThe access token is invalid, expired, or revoked.
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