---
title: "Changes to Create or update a marketing event"
method: PUT
path: "/marketing/marketing-events/2026-03/events/{externalEventId}"
---

# Changes to Create or update a marketing event

`PUT /marketing/marketing-events/2026-03/events/{externalEventId}`

> Every recorded change to this operation, newest first.
> 14 revisions in range; 1 not diffed, 2 could not be searched.

## Timeline

Changed in 3 of 14 revisions.

- **2026-05-27** `f9c7181056c5`: 2 warning, 2 info
- **2026-04-08** `b0d8bc008db9`: 1 info
- **2026-03-25** `62586336cea2`: 1 info

## Changes

- **2026-05-27** `f9c7181056c5`: 2 warning, 2 info
  - added the new `BREEZE_AGENT` enum value to the `customProperties/items/source` response property for the response status `200`
  - added the new `DI_WRITE_TO_CRM` enum value to the `customProperties/items/source` response property for the response status `200`
  - added the new `BREEZE_AGENT` enum value to the request property `customProperties/items/source`
  - added the new `DI_WRITE_TO_CRM` enum value to the request property `customProperties/items/source`
- **2026-04-08** `b0d8bc008db9`: 1 info
  - api operation id `put-/marketing/marketing-events/2026-03/events/{externalEventId}_upsert` removed and replaced with `put-/marketing/marketing-events/2026-03/events/{externalEventId}`
- **2026-03-25** `62586336cea2`: 1 info
  - endpoint added

---

[Operation](https://skmtc.dev/hubspot/apis/hubspot-api-specification/docs/marketing/marketing-events/2026-03/events/:externalEventId/put.md) - [API](https://skmtc.dev/hubspot/apis/hubspot-api-specification.md) - [Page](https://skmtc.dev/hubspot/apis/hubspot-api-specification/changes/marketing/marketing-events/2026-03/events/:externalEventId/put)