# Create a Deployment Migration

**PUT /groups/{groupId}/apps/{appId}/deployment_migration**

Start a new deployment migration.


## Servers
- The root API resource and starting point for the App Services API.: https://services.cloud.mongodb.com/api/admin/v3.0 (The root API resource and starting point for the App Services API.)


## Authentication methods
- Token auth


## Parameters

### Path parameters
- **groupId** (string)
  An Atlas [Project/Group
  ID](https://docs.atlas.mongodb.com/tutorial/manage-projects/).
- **appId** (string)
  The ObjectID of your application.
  [The App Services API Project and Application IDs section](#section/Project-and-Application-IDs) demonstrates how to find this
  value.


### Body: application/json (object)
The deployment model and cloud provider region that the App should migrate to.
- **deployment_model** (string)
  An application [deployment model](https://www.mongodb.com/zh-cn/docs/atlas/app-services/apps/deployment-models-and-regions/#deployment-models).
- **provider_region** (string)



## Responses
### 204
Migration started

### 400
Request is invalid, incomplete, or a no-op

### 404
App not found


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