---
title: "Changes to Update an end user (merge-on-conflict requires ?allow_merge=true)"
method: PUT
path: "/v1/identity/end-users/{end_user_id}"
---

# Changes to Update an end user (merge-on-conflict requires ?allow_merge=true)

`PUT /v1/identity/end-users/{end_user_id}`

> Every recorded change to this endpoint, newest first.

## Timeline

Changed in 1 of 3 revisions.

- **2026-08-12** `5a5597ebb2d6` — 3 warning, 9 info

## Changes

- **2026-08-12** `5a5597ebb2d6` — 3 warning, 9 info
  - the `display_name/anyOf[subschema #1]/` request property's maxLength was set to `255`
  - the `primary_email/anyOf[subschema #1]/` request property's maxLength was set to `255`
  - the `primary_phone/anyOf[subschema #1]/` request property's maxLength was set to `255`
  - added the new optional `query` request parameter `allow_merge`
  - added the non-success response with the status `409`
  - added the optional property `dropped_external_ids` to the response with the `200` status
  - added the optional property `retry_after` to the response with the `400` status
  - added the optional property `retry_after` to the response with the `401` status
  - added the optional property `retry_after` to the response with the `404` status
  - added the optional property `retryable` to the response with the `400` status
  - added the optional property `retryable` to the response with the `401` status
  - added the optional property `retryable` to the response with the `404` status

---

[Operation](https://skmtc.dev/oneloop-hq/apis/feather-api/docs/v1/identity/end-users/:end_user_id/put.md) · [API](https://skmtc.dev/oneloop-hq/apis/feather-api.md) · [Page](https://skmtc.dev/oneloop-hq/apis/feather-api/changes/v1/identity/end-users/:end_user_id/put)