---
title: "Update a size relationship"
method: PATCH
path: "/api/backlog_items/{id}/relationships/size"
tags: ["Backlog Items"]
---

# Update a size relationship

`PATCH /api/backlog_items/{id}/relationships/size`

## Request

- Base URL: `https://api.atono.io`
- URL: `https://api.atono.io/api/backlog_items/{id}/relationships/size`
- Auth: API key in header `X-API-KEY`

Update the size relationship of a backlog item

## Path parameters

- `id` string, uuid, required

## Request body

- SingleRelationshipUpdate
  - `data` ResourceIdentifier, required
    - `type` string, required: Identifies the type of the linked resource.
    - `id` string, required: The unique identifier of the linked resource.

## Response `200`

The updated size relationship

- SingleRelationship
  - `links` RelationshipLinks, required
    - `self` string, uri, nullable, required
    - `related` string, uri, nullable, required
  - `data` ResourceIdentifier, required
    - `type` string, required: Identifies the type of the linked resource.
    - `id` string, required: The unique identifier of the linked resource.
  - `meta` unknown, required

## Other responses

- `404`: Backlog item or size not found
- `500`: Unexpected error

---

[API](https://skmtc.dev/atono/apis/backend-api.md) · [All operations](https://skmtc.dev/atono/apis/backend-api/llms.txt) · [OpenAPI document](https://skmtc.dev/atono/apis/backend-api/revisions/78a57b1d8c3d?raw)