WhatsApp error 131021
Error 131021: Sender and recipient are the same number
Error 131021 means a message was sent from your business number to that same number. WhatsApp does not allow it. Send to a different number; to test, use a personal phone.
- Meta’s description
- “Sender and recipient phone number is the same.” Meta’s error codes, 5 October 2026
- Charged by Meta?
- No. Meta charges only for delivered messages, and this one was not delivered.
Common causes
- Testing by sending to the business number itself.
- A contact list or audience that includes your own business number.
How to fix it
- Send to a different number.
- Remove your business number from contact lists and broadcast audiences.
What Fliok does about it
- Fliok treats 131021 as permanent and does not retry it, and it does not set off an alert for each message.
Meta sets and changes these codes. If anything here disagrees with Meta’s current reference, Meta is right.
Send them to another phone, such as a personal number or a colleague’s.
Related codes
Other errors you may see
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