---
title: "Subscription Change"
description: "A Subscription Change is a scheduled modification to an existing Subscription — for example a planned quantity change, a planned terms switch, or an early renewal."
url: https://www.fenerum.com/en-DK/docs/api/subscription-change/
updated_at: "2026-05-18T00:00:00"
---
A **Subscription Change** is a scheduled modification of an existing [Subscription](https://www.fenerum.com/en-DK/docs/api/subscription.md). Use it to plan upgrades, downgrades, terms switches, quantity changes, or an early renewal — applied either immediately, at the next renewal, or at a specific date.

Changes are nested under their parent subscription: every endpoint here requires the parent subscription's UUID in the URL.

**`change_type`** values: `immediate`, `at_specified_time`, `at_renewal`.

**`state`** values: `scheduled` (queued, not yet applied), `applied` (already executed), `cancelled` (called the cancel action before it was applied), `errored` (apply failed).

See the [Scheduled subscription changes](https://www.fenerum.com/en-DK/docs/billing/subscriptions/scheduled-changes.md) guide for the billing-level concepts behind these endpoints.

`GET /api/v1/subscriptions/{subscription_uuid}/changes/` (schema: https://app.fenerum.com/api/swagger/?format=openapi)

---

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