---
page_type: error
code: 63116
message: >-
  63116: WhatsApp Sender failed to be automatically registered as OTP was not
  received
level: ERROR
product: Channels
---

## Description

OTP required to automatically verify and register WhatsApp Sender was not received by Twilio despite a successful request to Meta

### Possible Causes

- An internal error at Meta is preventing the OTP from being sent.
- SMS deliverability issues between Meta and Twilio are causing the code to be lost before reaching Twilio.

### Possible Solutions

- Retry your request later.
- Request the OTP to be sent via a voice call and manually verify it using the [Senders API](/docs/whatsapp/api/senders#verify-a-whatsapp-sender).
- Submit a support ticket to Twilio for further investigation. Twilio can escalate the issue to Meta if necessary, as they can adjust how the OTP is sent, potentially improving deliverability.