---
title: "PATCH /deviceUpdate/{instanceId}/management/deviceClasses/{deviceClassId}"
method: PATCH
path: "/deviceUpdate/{instanceId}/management/deviceClasses/{deviceClassId}"
tags: ["Device and deployment management"]
---

# PATCH /deviceUpdate/{instanceId}/management/deviceClasses/{deviceClassId}

`PATCH /deviceUpdate/{instanceId}/management/deviceClasses/{deviceClassId}`

Update device class details.

## Path parameters

- `instanceId` string, required
- `deviceClassId` string, required

## Query parameters

- `api-version` string, required

## Response `200`

The updated device class subgroup details.

- DeviceClass — Device class metadata.
  - `deviceClassId` string, required — The device class identifier.
  - `friendlyName` string — The device class friendly name. This can be updated by callers after the device class has been automatically created.
  - `deviceClassProperties` DeviceClassProperties, required — The device class properties that are used to calculate the device class Id
    - `contractModel` ContractModel — The Device Update agent contract model.
      - `id` string, required — The Device Update agent contract model Id of the device class. This is also used to calculate the device class Id.
      - `name` string, required — The Device Update agent contract model name of the device class. Intended to be a more readable form of the contract model Id.
    - `compatProperties` object, required — The compat properties of the device class. This object can be thought of as a set of key-value pairs where the key is the name of the compatibility property and the value is the value of the compatibility property. There will always be at least 1 compat property
  - `bestCompatibleUpdate` UpdateInfo — Update information.
    - `updateId` UpdateId, required — Update identifier.
      - `provider` string, required — Update provider.
      - `name` string, required — Update name.
      - `version` string, required — Update version.
    - `description` string — Update description.
    - `friendlyName` string — Friendly update name.

## Other responses

- `default` — Default response.

## Changes

- **2026-07-13** (2020-09-01) `5ba53cf1b884` — 1 info
  - endpoint added
- **2021-03-02** (2020-09-01) `be0eed01a5b1` — 1 breaking
  - api path removed without deprecation

[Change history](https://skmtc.dev/azure/apis/deviceupdate-microsoft-deviceupdate/changes/deviceUpdate/:instanceId/management/deviceClasses/:deviceClassId/patch.md)

---

[API](https://skmtc.dev/azure/apis/deviceupdate-microsoft-deviceupdate.md) · [All operations](https://skmtc.dev/azure/apis/deviceupdate-microsoft-deviceupdate/llms.txt) · [OpenAPI document](https://skmtc-service-production.skmtc.workers.dev/v1/apis/azure/deviceupdate-microsoft-deviceupdate/revisions/5ba53cf1b884/schema)