---
title: "Create an empty Face List with user-specified faceListId, name, an optional userData and recognitionModel."
method: PUT
path: "/facelists/{faceListId}"
---

# Create an empty Face List with user-specified faceListId, name, an optional userData and recognitionModel.

`PUT /facelists/{faceListId}`

Up to 64 Face Lists are allowed in one subscription.

Face List is a list of faces, up to 1,000 faces, and used by "Find Similar From Face List".

After creation, user should use "Add Face List Face" to import the faces. No image will be stored. Only the extracted face feature(s) will be stored on server until "Delete Face List" is called.

"Find Similar" is used for scenario like finding celebrity-like faces, similar face filtering, or as a light way face identification. But if the actual use is to identify person, please use Person Group / Large Person Group and "Identify".

Please consider Large Face List when the face number is large. It can support up to 1,000,000 faces.

## Path parameters

- `faceListId` string, required

## Request body

- CreateCollectionRequest — Model for creating face collection.
  - `name` string, required — User defined name, maximum length is 128.
  - `userData` string — Optional user defined data. Length should not exceed 16K.
  - `recognitionModel` 'recognition_01' | 'recognition_02' | 'recognition_03' | 'recognition_04' — The 'recognitionModel' associated with this face list. Supported 'recognitionModel' values include 'recognition_01', 'recognition_02, 'recognition_03', and 'recognition_04'. The default value is 'recognition_01'. 'recognition_04' is recommended since its accuracy is improved on faces wearing masks compared with 'recognition_03', and its overall accuracy is improved compared with 'recognition_01' and 'recognition_02'.

## Response `200`

The request has succeeded.

## Other responses

- `default` — An unexpected error response.

---

[API](https://skmtc.net/azure/apis/ai-face.md) · [All operations](https://skmtc.net/azure/apis/ai-face/llms.txt) · [OpenAPI document](https://skmtc-service-staging.skmtc.workers.dev/v1/apis/azure/ai-face/versions/e9a68c525be6/schema)