# POST /communication/1/flows/{}/participants stops working

Calls to POST /communication/1/flows/{id}/participants on Infobip API stopped working on October 25, 2024.

On October 25, 2024, POST /communication/1/flows/{id}/participants was shut down. Calls made to this endpoint after that date fail.

## What to use instead

Add people to a flow using POST /moments/1/flows/{campaignId}/participants instead, which supports 1 to 1000 participants per request.

- API: Infobip API (*.api.infobip.com)
- Kind: Endpoint removal
- Announced: October 25, 2023
- Takes effect: October 25, 2024
- Calls after that day: fail
- Calls it hits: `POST /communication/1/flows/{id}/participants`
- Source: [Announcement](https://api.infobip.com/platform/1/openapi?format=json)
- Verified: November 6, 2026, against Infobip API's own pages
- Page: https://www.okapi.bot/providers/infobip-api/breaking-changes/post-communication-1-flows-participants-stops-working/

## Infobip API's words

> "deprecation":"2023-10-25T00:00:00.777+0000", "sunset":"2024-10-25T12:00:00.777+0000", "successorOperationId":"add-flow-participants"

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