# POST /zones/{id_or_name}/rrsets/{rr_name}/{rr_type}/actions/change_ttl now requires ttl

Calls to POST /zones/{}/rrsets/{}/{}/actions/change_ttl, body parameter ttl on Hetzner Cloud API stopped working on September 30, 2026.

- API: Hetzner Cloud API (api.hetzner.cloud)
- Kind: Behaviour change
- Takes effect: September 30, 2026
- Calls after that day: fail
- Calls it hits: `POST /zones/{}/rrsets/{}/{}/actions/change_ttl`, `body parameter ttl`
- Source: [Changelog](https://docs.hetzner.cloud/changelog)
- Page: https://www.okapi.bot/providers/hetzner-cloud-api/breaking-changes/post-zones-id-or-name-rrsets-rr-name-rr-type-actions-change-ttl-now-requires-ttl/

## Hetzner Cloud API's words

> When updating the TTL of an RRSet, the value of ttl is no longer optional and must be provided starting on 30 September 2026.