---
title: "Open an activity month for an emissions source"
method: POST
path: "/v1/carbon_accounting/activity_periods/open_activity_month"
tags: ["Carbon accounting"]
---

# Open an activity month for an emissions source

`POST /v1/carbon_accounting/activity_periods/open_activity_month`

## Request

- Base URL: `https://api.sinai.com`
- URL: `https://api.sinai.com/v1/carbon_accounting/activity_periods/open_activity_month`
- Auth: one of:
  - OAuth 2
    - Client credentials
    - Token URL: `https://auth.sinai.com/oauth2/token` scopes: `https://api.sinai.com/carbon_accounting`
  - OAuth 2
    - Authorization code: `https://auth.sinai.com/oauth2/authorize`
    - Token URL: `https://auth.sinai.com/oauth2/token`
- TypeScript: <https://skmtc.dev/sinai/apis/sinai-api/docs/v1/carbon_accounting/activity_periods/open_activity_month/post.ts> (a function with typed inputs; its response is checked against the schema)

Opens a previously closed activity month for a specific emissions source, allowing modifications to the period.

## Query parameters

- `emissions_source_id` string, uuid, required
- `month` string, required

## Response `204`

Activity month successfully opened

## Other responses

- `400`: Your request is missing a parameter or has the wrong data type
- `403`: You are not authorized to acess this object

---

[API](https://skmtc.dev/sinai/apis/sinai-api.md) - [All operations](https://skmtc.dev/sinai/apis/sinai-api/llms.txt) - [OpenAPI document](https://skmtc.dev/sinai/apis/sinai-api/revisions/495dab1b31fd?raw)