---
title: "Abort Multipart Upload Target"
method: POST
path: "/api/workspace/uploads/multipart/abort"
tags: ["runtime_mutations", "workspace-uploads"]
---

# Abort Multipart Upload Target

`POST /api/workspace/uploads/multipart/abort`

Discard an abandoned upload's parts.

Always answers 204. The bucket's ``abort_incomplete_multipart_upload``
lifecycle rule is the correctness backstop, so a failed abort costs a day of
storage rather than anything a client could act on -- and this is called
from a client that is already cancelling, where an error would only produce
a toast about work nobody is waiting for.

## Request body

- MultipartAbortRequest
  - `relative_path` string, required
  - `upload_id` string, nullable
  - `s3_upload_id` string, required

## Response `204`

Successful Response

## Other responses

- `422` — Validation Error

---

[API](https://skmtc.net/quadrillion/apis/quadrillion-cloud-api.md) · [All operations](https://skmtc.net/quadrillion/apis/quadrillion-cloud-api/llms.txt) · [OpenAPI document](https://skmtc-service-staging.skmtc.workers.dev/v1/apis/quadrillion/quadrillion-cloud-api/revisions/f90b0af01f1e/schema)