---
title: "Changes to Preview subscription plan change"
method: POST
path: "/subscriptions/{id}/change/preview"
---

# Changes to Preview subscription plan change

`POST /subscriptions/{id}/change/preview`

> Every recorded change to this endpoint, newest first.

## Timeline

Changed in 4 of 12 revisions.

- **2026-05-18** `f62d8a5fe7cf` — 6 warning
- **2026-05-18** `0cb3425d6580` — 1 breaking, 1 warning, 2 info
- **2026-04-06** `4ded3711f401` — 6 warning, 12 info
- **2026-03-20** `bc91c95fbb1a` — 1 info

## Changes

- **2026-05-18** `f62d8a5fe7cf` — 6 warning
  - removed the optional property `details` from the response with the `400` status
  - removed the optional property `details` from the response with the `404` status
  - removed the optional property `details` from the response with the `500` status
  - added the new `too_many_requests` enum value to the `code` response property for the response status `400`
  - added the new `too_many_requests` enum value to the `code` response property for the response status `404`
  - added the new `too_many_requests` enum value to the `code` response property for the response status `500`
- **2026-05-18** `0cb3425d6580` — 1 breaking, 1 warning, 2 info
  - removed the enum value `ONETIME` of the request property `billing_cadence`
  - added the new `ONETIME` enum value to the `new_billing_cycle/billing_period` response property for the response status `200`
  - added the new `ONETIME` enum value to the request property `billing_period`
  - removed the `ONETIME` enum value from the `new_billing_cycle/billing_cadence` response property for the response status `200`
- **2026-04-06** `4ded3711f401` — 6 warning, 12 info
  - removed the optional property `error` from the response with the `400` status
  - removed the optional property `error` from the response with the `404` status
  - removed the optional property `error` from the response with the `500` status
  - removed the optional property `success` from the response with the `400` status
  - removed the optional property `success` from the response with the `404` status
  - removed the optional property `success` from the response with the `500` status
  - added the optional property `code` to the response with the `400` status
  - added the optional property `code` to the response with the `404` status
  - added the optional property `code` to the response with the `500` status
  - added the optional property `details` to the response with the `400` status
  - added the optional property `details` to the response with the `404` status
  - added the optional property `details` to the response with the `500` status
  - added the optional property `http_status_code` to the response with the `400` status
  - added the optional property `http_status_code` to the response with the `404` status
  - added the optional property `http_status_code` to the response with the `500` status
  - added the optional property `message` to the response with the `400` status
  - added the optional property `message` to the response with the `404` status
  - added the optional property `message` to the response with the `500` status
- **2026-03-20** `bc91c95fbb1a` — 1 info
  - endpoint added

---

[Operation](https://skmtc.dev/flexprice/apis/flexprice-api-2/docs/subscriptions/:id/change/preview/post.md) · [API](https://skmtc.dev/flexprice/apis/flexprice-api-2.md) · [Page](https://skmtc.dev/flexprice/apis/flexprice-api-2/changes/subscriptions/:id/change/preview/post)