# Pre-verify user's phone number

Send a one-time code (OTC) to the specified phone number to initiate verification.

This endpoint is used to pre-verify a phone number before associating it with a user account. It sends an SMS-based one-time code to the provided number.

Request body must include:
- phoneNumber: The phone number to verify, in international format.

Use this endpoint to validate ownership of a phone number by sending a one-time code for user input during onboarding or account setup.

Endpoint: POST /resources/users/phone-numbers/v1/preverify
Security: bearer

## Request fields (application/json):

  - `phoneNumber` (string, required)
    New phone number