> ## Documentation Index
> Fetch the complete documentation index at: https://code.dcycle.io/llms.txt
> Use this file to discover all available pages before exploring further.

# Unlink Entities from Project

> Remove entity-project associations without deleting the underlying records

# Unlink Entities from Project

Remove the association between entities and a project. The entities themselves are not deleted — they continue to exist at the organization level and can be re-linked to the same or different projects at any time.

<Note>
  **New API**: This endpoint is part of the new API architecture.
</Note>

## Request

### Headers

<ParamField header="x-api-key" type="string" required>
  Your API key for authentication

  **Example:** `sk_live_1234567890abcdef`
</ParamField>

<ParamField header="x-organization-id" type="string" required>
  Your organization UUID

  **Example:** `a8315ef3-dd50-43f8-b7ce-d839e68d51fa`
</ParamField>

### Path Parameters

<ParamField path="project_id" type="string" required>
  The UUID of the project to unlink entities from

  **Example:** `b7f2a1c3-4d5e-6f7a-8b9c-0d1e2f3a4b5c`
</ParamField>

### Body Parameters

<ParamField body="entity_type" type="string" required>
  The type of entities being unlinked.

  **Available values:** `logistic_requests`, `logistic_recharges`, `logistic_packages`, `invoices`, `file_readings`
</ParamField>

<ParamField body="entity_ids" type="array[string]" required>
  List of entity UUIDs to unlink. Minimum 1, maximum 100 per request.

  **Example:** `["550e8400-e29b-41d4-a716-446655440000", "660e8400-e29b-41d4-a716-446655440001"]`
</ParamField>

## Response

<ResponseField name="deleted" type="integer">
  Number of associations removed
</ResponseField>

## Example

<CodeGroup>
  ```bash cURL theme={"theme":{"light":"github-light","dark":"github-dark"}}
  curl -X POST "https://api.dcycle.io/v1/projects/b7f2a1c3-4d5e-6f7a-8b9c-0d1e2f3a4b5c/entities/unlink" \
    -H "x-api-key: ${DCYCLE_API_KEY}" \
    -H "x-organization-id: ${DCYCLE_ORG_ID}" \
    -H "Content-Type: application/json" \
    -d '{
      "entity_type": "invoices",
      "entity_ids": [
        "550e8400-e29b-41d4-a716-446655440000"
      ]
    }'
  ```

  ```python Python theme={"theme":{"light":"github-light","dark":"github-dark"}}
  import requests
  import os

  api_key = os.getenv("DCYCLE_API_KEY")
  org_id = os.getenv("DCYCLE_ORG_ID")
  project_id = "b7f2a1c3-4d5e-6f7a-8b9c-0d1e2f3a4b5c"

  headers = {
      "x-api-key": api_key,
      "x-organization-id": org_id,
      "Content-Type": "application/json"
  }

  payload = {
      "entity_type": "invoices",
      "entity_ids": ["550e8400-e29b-41d4-a716-446655440000"]
  }

  response = requests.post(
      f"https://api.dcycle.io/v1/projects/{project_id}/entities/unlink",
      headers=headers,
      json=payload
  )

  result = response.json()
  print(f"Unlinked: {result['deleted']} entities")
  ```

  ```javascript JavaScript theme={"theme":{"light":"github-light","dark":"github-dark"}}
  const axios = require('axios');

  const apiKey = process.env.DCYCLE_API_KEY;
  const orgId = process.env.DCYCLE_ORG_ID;
  const projectId = 'b7f2a1c3-4d5e-6f7a-8b9c-0d1e2f3a4b5c';

  const headers = {
    'x-api-key': apiKey,
    'x-organization-id': orgId,
    'Content-Type': 'application/json'
  };

  const payload = {
    entity_type: 'invoices',
    entity_ids: ['550e8400-e29b-41d4-a716-446655440000']
  };

  axios.post(
    `https://api.dcycle.io/v1/projects/${projectId}/entities/unlink`,
    payload,
    { headers }
  )
  .then(response => {
    console.log(`Unlinked: ${response.data.deleted} entities`);
  })
  .catch(error => console.error(error));
  ```
</CodeGroup>

### Successful Response

```json theme={"theme":{"light":"github-light","dark":"github-dark"}}
{
  "deleted": 1
}
```

## Common Errors

### 401 Unauthorized

**Cause:** Missing or invalid API key

```json theme={"theme":{"light":"github-light","dark":"github-dark"}}
{"detail": "Invalid API key for organization", "code": "INVALID_API_KEY"}
```

### 403 Forbidden

**Cause:** The authenticated user is not a member of the organization

```json theme={"theme":{"light":"github-light","dark":"github-dark"}}
{"detail": "Logged User is not Member of Organization", "code": "LOGGED_USER_NOT_MEMBER"}
```

### 404 Not Found

**Cause:** The project does not exist or belongs to another organization

```json theme={"theme":{"light":"github-light","dark":"github-dark"}}
{"detail": "Not Found"}
```

### 422 Unprocessable Entity

**Cause:** Invalid entity type or missing entity IDs

```json theme={"theme":{"light":"github-light","dark":"github-dark"}}
{
  "detail": [
    {
      "loc": ["body", "entity_type"],
      "msg": "field required",
      "type": "value_error.missing"
    }
  ]
}
```

## Related Endpoints

<CardGroup cols={2}>
  <Card title="Link Entities" icon="link" href="/api-reference/projects/link-entities">
    Link entities by ID to a project
  </Card>

  <Card title="Link by Filters" icon="filter" href="/api-reference/projects/link-by-filters">
    Bulk-link all entities matching a filter
  </Card>
</CardGroup>