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

# Mark Output Completed

> Mark a letter as acknowledged so it no longer appears in the unread feed

Mark a specific output (letter) as acknowledged/completed. This sets the output's read status so it no longer appears in the unread feed.

<Note>
  All endpoints require authentication. For credentials and access, contact the **medWrite team**.
</Note>

## Request

```
PATCH {{baseUrl}}/api/v1/third-parites/letters/{Output ID}/acknowledge/
```

## Headers

| Header       | Type   | Required | Description                                  |
| ------------ | ------ | -------- | -------------------------------------------- |
| Bearer Token | string | Yes      | Authentication token. Contact medWrite team. |
| API Key      | string | Yes      | Service API key. Contact medWrite team.      |

## Path parameters

| Parameter | Type   | Required | Description                          |
| --------- | ------ | -------- | ------------------------------------ |
| Output ID | string | Yes      | The unique identifier of the output. |

## Response

**Status:** `200 OK`

```json theme={null}
{
  "data": {
    "id": "...",
    "ehr_read": true,
    "ehr_read_date": "2025-01-15T14:30:00.000000",
    "...": "..."
  },
  "message": "letter acknowledged successfully",
  "status": "success"
}
```

If the letter was already acknowledged, the response returns `"message": "letter already acknowledged"` with the existing read date.

## Error responses

| Status | Condition                         |
| ------ | --------------------------------- |
| `400`  | Missing Output ID                 |
| `401`  | Invalid or missing authentication |
| `404`  | Letter not found                  |

## Next steps

<Columns cols={2}>
  <Card title="Get Approved Outputs" icon="file-check" href="/get-approved-outputs">
    Retrieve approved letters (FHIR Bundle).
  </Card>

  <Card title="Get PDF Document" icon="file-arrow-down" href="/get-pdf-document">
    Download PDF for an output and bundle.
  </Card>
</Columns>