---
title: "Changes to Trigger an API campaign send"
method: POST
path: "/campaigns/{campaignId}/trigger"
---

# Changes to Trigger an API campaign send

`POST /campaigns/{campaignId}/trigger`

> Every recorded change to this operation, newest first.

## Timeline

Changed in 2 of 19 revisions.

- **2026-10-16** `27eda923b6d4`: 1 warning
- **2026-10-02** `f5525483cd8d`: 1 warning, 2 info

## Changes

- **2026-10-16** `27eda923b6d4`: 1 warning
  - added the new `whatsapp_marketing_us_number` enum value to the `anyOf[#/components/schemas/StartCampaignResponse]/results/items/reason` response property for the response status `200`
- **2026-10-02** `f5525483cd8d`: 1 warning, 2 info
  - added the new `invalid_locale` enum value to the `anyOf[#/components/schemas/StartCampaignResponse]/results/items/reason` response property for the response status `200`
  - added the new optional request property `recipients/items/anyOf[#/components/schemas/HandleCampaignRecipient]/locale`
  - added the new optional request property `recipients/items/anyOf[#/components/schemas/ProfileCampaignRecipient]/locale`

---

[Operation](https://skmtc.dev/hightouch/apis/hightouch-api/docs/campaigns/:campaignId/trigger/post.md) - [API](https://skmtc.dev/hightouch/apis/hightouch-api.md) - [Page](https://skmtc.dev/hightouch/apis/hightouch-api/changes/campaigns/:campaignId/trigger/post)