> For the complete documentation index, see [llms.txt](https://dev.guardian.hedera.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://dev.guardian.hedera.com/developer-tools-and-resources/api-reference/policy-creation-using-the-guardian-apis/sends-data-to-specified-block.md).

# Sends Data to Specified Block

**`POST /policies/{policyId}/blocks/{uuid}`**

Sends data to the specified block within a policy.

**Authentication:** Bearer token required (`Authorization: Bearer <token>`)

**Permission:** `Permissions.POLICIES_POLICY_EXECUTE` or `Permissions.POLICIES_POLICY_MANAGE`

***

## Request

### Path Parameters

| Parameter  | Type   | Required | Description                                                       |
| ---------- | ------ | -------- | ----------------------------------------------------------------- |
| `policyId` | string | Yes      | The policy ID (MongoDB ObjectId, e.g. `63e3e5e8a01b3c001234abcd`) |
| `uuid`     | string | Yes      | The block UUID identifier                                         |

### Query Parameters

| Parameter          | Type    | Required | Default | Description                              |
| ------------------ | ------- | -------- | ------- | ---------------------------------------- |
| `timeout`          | number  | No       | 60000   | Request timeout in milliseconds          |
| `waitRemotePolicy` | boolean | No       | true    | Wait for a response from a remote policy |

### Request Body

```json
{
  "document": {},
  "ref": null
}
```

The request body is a JSON object containing the data to submit to the block (exact schema depends on the block type).

***

## Response

### Success Response

**Status:** `200 OK`

```json
{
  "id": "a1b2c3d4-e5f6-7890-abcd-ef1234567890",
  "blockType": "requestVcDocumentBlock",
  "data": {}
}
```

### Error Responses

| Status                      | Description                             |
| --------------------------- | --------------------------------------- |
| `401 Unauthorized`          | Missing or invalid token                |
| `403 Forbidden`             | Insufficient permissions                |
| `404 Not Found`             | Policy or block not found               |
| `422 Unprocessable Entity`  | Invalid or rejected block data          |
| `503 Service Unavailable`   | Policy block is temporarily unavailable |
| `500 Internal Server Error` | Unexpected server failure               |