---
title: "Create Mitigation Scenario"
method: POST
path: "/conjunction_messages/{cdm_id}/mitigation_scenarios"
tags: ["Mitigation"]
---

# Create Mitigation Scenario

`POST /conjunction_messages/{cdm_id}/mitigation_scenarios`

## Request

- Base URL: `https://api.satcat.com/api/satcat`
- URL: `https://api.satcat.com/api/satcat/conjunction_messages/{cdm_id}/mitigation_scenarios`
- Auth: OAuth 2 (client credentials, token URL `oauth/token`; password, token URL `login`)

Create a mitigation scenario on the cdm id from an ephemeris id

## Path parameters

- `cdm_id` string, required

## Query parameters

- `ephem_id` string, uuid, required
- `group_id` string, uuid, nullable: Optional group ID to use for the request

## Response `201`

Successful Response

- ScenarioRead
  - `id` string, uuid, required
  - `name` string, nullable
  - `started_at` string, date-time, nullable
  - `completed_at` string, date-time, nullable
  - `updated_at` string, date-time, nullable
  - `cdm_id` integer, nullable
  - `cdm_key` string, nullable
  - `status` string, required
  - `constellation` string, nullable
  - `asset_norad_cat_id` integer, nullable
  - `autogenerated` boolean, required
  - `completed_tradespaces` integer, nullable
  - `ephemeris_id` string, uuid, nullable
  - `propagation_id` string, uuid, nullable
  - `failure_message` 'SATCAT' | 'NO_EPHEMERIS_OVERLAP' | 'PROPAGATION'

## Other responses

- `422`: Validation Error

---

[API](https://skmtc.dev/satcat/apis/satcat-service-api.md) - [All operations](https://skmtc.dev/satcat/apis/satcat-service-api/llms.txt) - [OpenAPI document](https://skmtc.dev/satcat/apis/satcat-service-api/revisions/7d8e32c7627f?raw)