---
title: "Request a higher sender ID daily limit"
method: POST
path: "/v1/sms/sender-ids/limit-request"
tags: ["SMS"]
---

# Request a higher sender ID daily limit

`POST /v1/sms/sender-ids/limit-request`

Asks support to raise the workspace's daily sender-ID message cap.
There is no self-serve raise: the request (desired cap + use case) is
reviewed manually, usually within a business day.

## Request body

- object
  - `requestedCap` integer, required — Desired daily message cap. Must exceed the current cap.
  - `reason` string, required — Use case and audience (what you send, to whom, opt-in status).

## Response `200`

Request submitted for review.

- object
  - `requested` boolean
  - `requestedCap` integer

## Other responses

- `400` — Invalid request
- `401` — Unauthorized
- `409` — A cap-raise request is already awaiting review (code `sender_id_raise_pending`); one at a time.
- `503` — Request could not be submitted; retry or contact support.

---

[API](https://skmtc.net/zernio/apis/zernio-api.md) · [All operations](https://skmtc.net/zernio/apis/zernio-api/llms.txt) · [OpenAPI document](https://skmtc-service-staging.skmtc.workers.dev/v1/apis/zernio/zernio-api/versions/51932b099b2f/schema)