# POST /load_balancers/{id}/actions/change_dns_ptr now requires dns_ptr

Calls to POST /load_balancers/{}/actions/change_dns_ptr, body parameter dns_ptr 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 /load_balancers/{}/actions/change_dns_ptr`, `body parameter dns_ptr`
- Source: [Changelog](https://docs.hetzner.cloud/changelog)
- Page: https://www.okapi.bot/providers/hetzner-cloud-api/breaking-changes/post-load-balancers-id-actions-change-dns-ptr-now-requires-dns-ptr/

## Hetzner Cloud API's words

> When updating the PTR record (reverse DNS) for a Primary IP, Floating IP, Server, or Load Balancer, the value of dns_ptr is no longer optional and must be provided starting on 30 September 2026.