---
title: "Create activation"
method: POST
path: "/entities/segments/{segmentId}/syndications"
tags: ["Activations"]
---

# Create activation

`POST /entities/segments/{segmentId}/syndications`

Create an activation (formerly syndication).

## Path parameters

- `segmentId` integer, required

## Response `200`

Created Activation

## Changes

- **2026-08-21** `24caa8eb809b` — 1 breaking, 6 warning, 3 info
  - the `data/attributes/syndicationBehaviors/items/` response's property type/format changed from `object`/`` to ``/`` for status `200`
  - removed the optional property `data/attributes/syndicationBehaviors/items/behaviorTableName` from the response with the `200` status
  - removed the optional property `data/attributes/syndicationBehaviors/items/columns` from the response with the `200` status
  - removed the optional property `data/attributes/syndicationBehaviors/items/formatting` from the response with the `200` status
  - …6 more

[Change history](https://skmtc.dev/treasure/apis/cdp-api/changes/entities/segments/:segmentId/syndications/post.md)

---

[API](https://skmtc.dev/treasure/apis/cdp-api.md) · [All operations](https://skmtc.dev/treasure/apis/cdp-api/llms.txt) · [OpenAPI document](https://skmtc-service-production.skmtc.workers.dev/v1/apis/treasure/cdp-api/revisions/24caa8eb809b/schema)