---
title: "Update the data of a person face."
method: PATCH
path: "/persons/{personId}/recognitionModels/{recognitionModel}/persistedFaces/{persistedFaceId}"
tags: ["PersonDirectory"]
---

# Update the data of a person face.

`PATCH /persons/{personId}/recognitionModels/{recognitionModel}/persistedFaces/{persistedFaceId}`

## Path parameters

- `personId` string, uuid, required
- `recognitionModel` string, required
- `persistedFaceId` string, uuid, required

## Request body

- PersistedFaceWithType
  - `detectionModel` 'detection_01' | 'detection_02' | 'detection_03' | 'detection_preview_1904' | 'ir_detection_01' | 'expression_01' — Detection model used when extracting the face.
  - `faceFeature` string, byte
  - `persistedFaceId` string, uuid
  - `userData` string

## Response `200`

Success

## Other responses

- `default` — Response entity accompanying non-successful responses containing additional details about the error.

## Changes

- **2026-07-13** `8a19b734b92a` — 1 info
  - endpoint added
- **2017-12-28** `e67414f9aeba` — 1 breaking
  - api path removed without deprecation

[Change history](https://skmtc.dev/azure/apis/cognitiveservices-face/changes/persons/:personId/recognitionModels/:recognitionModel/persistedFaces/:persistedFaceId/patch.md)

---

[API](https://skmtc.dev/azure/apis/cognitiveservices-face.md) · [All operations](https://skmtc.dev/azure/apis/cognitiveservices-face/llms.txt) · [OpenAPI document](https://skmtc-service-production.skmtc.workers.dev/v1/apis/azure/cognitiveservices-face/revisions/8a19b734b92a/schema)