---
title: "DELETE /v1/projects/{projectsId}/locations/{locationsId}/reservations/{reservationsId}/assignments/{assignmentsId}"
method: DELETE
path: "/v1/projects/{projectsId}/locations/{locationsId}/reservations/{reservationsId}/assignments/{assignmentsId}"
tags: ["projects"]
---

# DELETE /v1/projects/{projectsId}/locations/{locationsId}/reservations/{reservationsId}/assignments/{assignmentsId}

`DELETE /v1/projects/{projectsId}/locations/{locationsId}/reservations/{reservationsId}/assignments/{assignmentsId}`

## Request

- Base URL: `https://bigqueryreservation.googleapis.com`
- URL: `https://bigqueryreservation.googleapis.com/v1/projects/{projectsId}/locations/{locationsId}/reservations/{reservationsId}/assignments/{assignmentsId}`
- Auth: one of:
  - OAuth 2 and OAuth 2
    - Implicit: `https://accounts.google.com/o/oauth2/auth`
    - Scopes: `https://www.googleapis.com/auth/bigquery`
    - Authorization code: `https://accounts.google.com/o/oauth2/auth`
    - Token URL: `https://accounts.google.com/o/oauth2/token` scopes: `https://www.googleapis.com/auth/bigquery`
  - OAuth 2 and OAuth 2
    - Implicit: `https://accounts.google.com/o/oauth2/auth`
    - Scopes: `https://www.googleapis.com/auth/cloud-platform`
    - Authorization code: `https://accounts.google.com/o/oauth2/auth`
    - Token URL: `https://accounts.google.com/o/oauth2/token` scopes: `https://www.googleapis.com/auth/cloud-platform`

Deletes a assignment. No expansion will happen. Example: * Organization `organizationA` contains two projects, `project1` and `project2`. * Reservation `res1` exists and was created previously. * CreateAssignment was used previously to define the following associations between entities and reservations: `` and `` In this example, deletion of the `` assignment won't affect the other assignment ``. After said deletion, queries from `project1` will still use `res1` while queries from `project2` will switch to use on-demand mode.

## Path parameters

- `projectsId` string, required
- `locationsId` string, required
- `reservationsId` string, required
- `assignmentsId` string, required

## Response `200`

Successful response

- Empty: A generic empty message that you can re-use to avoid defining duplicated empty messages in your APIs. A typical example is to use it as the request or the response type of an API method. For instance: service Foo { rpc Bar(google.protobuf.Empty) returns (google.protobuf.Empty); }

## Changes

- **2026-11-03** `a802531c2771`: 4 info
  - the security scope `https://www.googleapis.com/auth/bigquery` was added to the endpoint's security scheme `Oauth2`
  - the security scope `https://www.googleapis.com/auth/bigquery` was added to the endpoint's security scheme `Oauth2c`
  - the security scope `https://www.googleapis.com/auth/cloud-platform` was removed from the endpoint's security scheme `Oauth2`
  - the security scope `https://www.googleapis.com/auth/cloud-platform` was removed from the endpoint's security scheme `Oauth2c`

[Operation history](https://skmtc.dev/google/apis/bigqueryreservation/changes/v1/projects/:projectsId/locations/:locationsId/reservations/:reservationsId/assignments/:assignmentsId/delete.md)

---

[API](https://skmtc.dev/google/apis/bigqueryreservation.md) - [All operations](https://skmtc.dev/google/apis/bigqueryreservation/llms.txt) - [OpenAPI document](https://skmtc.dev/google/apis/bigqueryreservation/revisions/a802531c2771?raw)