---
title: "Create a registration share link"
method: POST
path: "/v1/sms/registrations/share"
tags: ["SMS"]
---

# Create a registration share link

`POST /v1/sms/registrations/share`

Creates a single-use, expiring link (valid 7 days) that lets someone
else (whoever has the legal business details) fill in the carrier
registration form for one of your numbers, without a Zernio login. The
registration is created under your account once the form is submitted.

## Request body

- object
  - `numberId` string, required — Your phone number's ID (from GET /v1/phone-numbers).

## Response `200`

Share link created.

- object
  - `url` string
  - `expiresAt` string, date-time

## Other responses

- `400` — Invalid request
- `401` — Unauthorized
- `404` — Number not found

## Changes

- **2026-09-16** `3e6ddf2a99ea` — 1 info
  - added the optional property `details/budgetScope` to the response with the `400` status
- **2026-09-15** `0dba7d004d75` — 2 info
  - added the optional property `details/quotaExhausted` to the response with the `400` status
  - added the optional property `details/quotaScope` to the response with the `400` status

[Change history](https://skmtc.dev/zernio/apis/zernio-api/changes/v1/sms/registrations/share/post.md)

---

[API](https://skmtc.dev/zernio/apis/zernio-api.md) · [All operations](https://skmtc.dev/zernio/apis/zernio-api/llms.txt) · [OpenAPI document](https://skmtc.dev/zernio/apis/zernio-api/revisions/eded32b62823?raw)