# Duplicate a project

`POST /api/project/{projectId}/duplicate`

URL: https://repsona.com/api/post-project-projectid-duplicate

Duplicates statuses, milestones and the task tree (tags included). Task status/responsible/ball are cleared. Notes, teammates and Kaizen are not duplicated.

## Parameters

| name | in | type | required | description |
| --- | --- | --- | --- | --- |
| `projectId` | path | integer | required | The project ID. |

## Request body

| name | in | type | required | description |
| --- | --- | --- | --- | --- |
| `key` | body | string | required | Unique key of the new project: 3 to 30 characters of letters, numbers, `_`, `-` and `.`. |
| `name` | body | string | required | Display name of the new project (up to 255 characters). Falls back to `key` when empty. |
| `userIds` | body | integer[] |  | IDs of users to add as members of the new project (up to 500). You are always added. Users outside the space are ignored. |
| `startDate` | body | integer \| null |  | Start day of the copied schedule, in epoch milliseconds. Task dates are shifted so the earliest start or due date of the source tasks falls on this day (UTC). Omit or pass `null` to keep the original dates. |

## Request

```sh
curl -X POST "https://<space>.repsona.com/api/project/{projectId}/duplicate" \
  -H "Authorization: Bearer $REPSONA_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "key": "WEB-NEXT",
    "name": "Website renewal (phase 2)",
    "userIds": [
      988
    ],
    "startDate": 1796169600000
  }'
```

## Responses

- 200: Duplicated project detail
- 400: Invalid body or project name already exists
- 401: Authentication is required
- 403: Not a project member
- 404: Project not found

## Example response

```json
{
  "id": 258,
  "name": "WEB-NEXT",
  "fullName": "Website renewal (phase 2)",
  "purpose": "",
  "avatarUrl": "",
  "backgroundUrl": "",
  "productImageUrl": "",
  "isClosed": false,
  "isPublic": false,
  "free": false,
  "holidays": [],
  "regularHolidays": [
    0,
    6
  ],
  "members": [
    {
      "id": 987,
      "name": "sam.carter",
      "fullName": "Sam Carter",
      "avatarUrl": null,
      "color": null,
      "state": "active"
    },
    {
      "id": 988,
      "name": "reon.walls",
      "fullName": "Reon Walls",
      "avatarUrl": null,
      "color": null,
      "state": "active"
    }
  ],
  "hasTask": true
}
```