---
title: "Cancel a Reach & Frequency reservation"
method: DELETE
path: "/v1/ads/rf-predictions/{predictionId}"
tags: ["Reach and Frequency"]
---

# Cancel a Reach & Frequency reservation

`DELETE /v1/ads/rf-predictions/{predictionId}`

Releases a RESERVATION's locked price and inventory. Unreserved predictions expire on their own.

## Path parameters

- `predictionId` string, required

## Query parameters

- `accountId` string, required
- `adAccountId` string, required

## Response `200`

Reservation cancelled

## Other responses

- `400` — Invalid input, or Meta rejected the cancel
- `401` — Unauthorized
- `501` — Only supported on Meta (facebook/instagram)

---

[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/f81ca70ea6b9/schema)