131045
WhatsApp error 131045 Phone number registration error
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Sending and connection errors
Short answer
The message failed to send because of a phone number registration error. Meta's fix is to register the phone number before trying again.
Checked against Meta docs on
2026-08-24
Official source
- Sara Delivered
- Karl Failed 131045Phone number registration error
How to fix it
- Register the phone number before trying again.
- Send the message again once the number is registered.
Meta's official wording for this code
Description
Message failed to send due to a phone number registration error.
Meta's suggested solution
Register the phone number before trying again.
Other codes in the same category
Common questions about this code
What does WhatsApp error 131045 mean?
The message failed to send because of a phone number registration error. Meta's fix is to register the phone number before trying again.
Can I just send the message again?
Not before the cause is addressed. Complete the steps above, then send again.
Is this a problem with my account?
You resolve this from your own account settings.
Still hitting this error?
Send us the code and a screenshot and we will read it with you. With LetsBot, the reason each message failed appears next to it in the campaign report instead of a bare number.