---
title: "Assign projects to billing group"
method: POST
path: "/billing-group/{billing_group_id}/projects-assign"
tags: ["BillingGroup"]
deprecated: true
---

# Assign projects to billing group

`POST /billing-group/{billing_group_id}/projects-assign`

> **Deprecated.**

The API endpoint /v1/billing-group/{billing\_group\_id}/projects-assign is deprecated. Use https://api.aiven.io/v1/organization/{organization\_id}/project/{project\_id} instead. It will be removed on 2026-07-17.

## Path parameters

- `billing_group_id` string, required

## Request body

- BillingGroupProjectsAssignRequestBody — BillingGroupProjectsAssignRequestBody
  - `projects_names` string[], required — Projects names

## Response `200`

Response

- BillingGroupProjectsAssignResponse — BillingGroupProjectsAssignResponse
  - `errors` object[] — List of errors occurred during request processing
    - `message` string, required — Printable error message
    - `more_info` string — URL to the documentation of the error
    - `status` integer, required — HTTP error status code
  - `message` string — Printable result of the request

## Changes

- **2026-07-31** `871517494397` — 1 info
  - endpoint deprecated
- **2026-07-26** `b262b3b4c127` — 1 info
  - endpoint reactivated

[Change history](https://skmtc.dev/aiven/apis/aiven-api-documentation/changes/billing-group/:billing_group_id/projects-assign/post.md)

---

[API](https://skmtc.dev/aiven/apis/aiven-api-documentation.md) · [All operations](https://skmtc.dev/aiven/apis/aiven-api-documentation/llms.txt) · [OpenAPI document](https://skmtc-service-production.skmtc.workers.dev/v1/apis/aiven/aiven-api-documentation/revisions/6577fedfd4a2/schema)