# POST /iid/v1:batchRemove stops working

Calls to POST /iid/v1:batchRemove on iid.googleapis.com stop working on September 29, 2027.

On September 29, 2027, the endpoint POST /iid/v1:batchRemove will be decommissioned and stop working. Calls to this endpoint will fail after that date. The change follows the deprecation of all InstanceId server APIs and the device group feature.

## What to use instead

Use the FCM topic subscription API instead: DELETE /v1/projects/{project}/registrations/{registration}/topicSubscriptions/{topic} on fcm.googleapis.com, or a Firebase Admin SDK release that calls it.

- API: iid.googleapis.com (iid.googleapis.com)
- Kind: Endpoint removal
- Announced: September 1, 2026
- Takes effect: September 29, 2027
- Calls after that day: fail
- Calls it hits: `POST /iid/v1:batchRemove`
- Source: [Announcement](https://firebase.google.com/docs/cloud-messaging/troubleshooting)
- Verified: October 29, 2026, against iid.googleapis.com's own pages
- Page: https://www.okapi.bot/providers/iid-googleapis-com/breaking-changes/post-iid-v1-batchremove-stops-working/

## iid.googleapis.com's words

> All the InstanceId server APIs and the device group feature are deprecated and will be decommissioned on September 29, 2027.

Okapi finds the calls this change hits in your repo and opens the pull request with the fix: https://github.com/apps/okapi-agent