---
title: "Patch a given relationship given the relationship ID and a given device ID."
method: PATCH
path: "/devices/{deviceId}/relationships/{relationshipId}"
---

# Patch a given relationship given the relationship ID and a given device ID.

`PATCH /devices/{deviceId}/relationships/{relationshipId}`

Update device relationship

## Path parameters

- `deviceId` string, required
- `relationshipId` string, required

## Query parameters

- `api-version` string, required

## Request body

- object

## Response `200`

Success

- DeviceRelationship — An object representing the relationship between an upstream and a downstream device.
  - `id` string — The unique identifier of this relationship.
  - `source` string — The device ID of the source (parent) device.
  - `target` string — The device ID of the target (child) device.

## Other responses

- `default` — An error response received from the IoT Central Service.

## Changes

- **2026-07-13** (1.0) `50c39d38d85a` — 1 breaking
  - api path removed without deprecation
- **2026-07-13** (1.0) `bcae1054dfc8` — 1 info
  - endpoint added
- **2026-07-13** (1.0) `91b0e78f975b` — 1 breaking
  - api path removed without deprecation
- **2026-07-13** (1.0) `6626576352d6` — 1 info
  - endpoint added

[Change history](https://skmtc.dev/azure/apis/iotcentral-iotcentral/changes/devices/:deviceId/relationships/:relationshipId/patch.md)

---

[API](https://skmtc.dev/azure/apis/iotcentral-iotcentral.md) · [All operations](https://skmtc.dev/azure/apis/iotcentral-iotcentral/llms.txt) · [OpenAPI document](https://skmtc-service-production.skmtc.workers.dev/v1/apis/azure/iotcentral-iotcentral/revisions/565d8813cbd3/schema)