---
title: "Update Block Document Data"
method: PATCH
path: "/api/block_documents/{id}"
tags: ["Block documents"]
---

# Update Block Document Data

`PATCH /api/block_documents/{id}`

## Request

- The document declares no server URL.
- Auth: none declared

## Path parameters

- `id` string, uuid, required: The block document id

## Headers

- `x-prefect-api-version` string

## Request body

- BlockDocumentUpdate: Data used by the Prefect REST API to update a block document.
  - `block_schema_id` string, uuid: A block schema ID
  - `data` object: The block document's data
  - `merge_existing_data` boolean

## Response `204`

Successful Response

## Other responses

- `422`: Validation Error

---

[API](https://skmtc.dev/prefecthq/apis/prefect-versions-api.md) - [All operations](https://skmtc.dev/prefecthq/apis/prefect-versions-api/llms.txt) - [OpenAPI document](https://skmtc.dev/prefecthq/apis/prefect-versions-api/revisions/a7958ce57e96?raw)