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

# Cancel MED Case

> Request cancellation of a payer-side MED case.

Request cancellation of one MED case in the selected payer-side owner scope.

### Endpoint

`POST /v3/med/cancel`

### Authentication and target

Use an account credential for its bound account, or a user credential with both `X-ISPB` and `X-Account-Number`. If an account credential sends those headers, both must be present and must match its bound account. Platform credentials are not accepted. All requests require the standard HMAC-SHA256 headers. The selected account determines payer-side MED owner scope; receiver-side operations are not exposed by these routes.

The curl example below uses an ACCOUNT credential bound to the operated account, so it omits X-ISPB and X-Account-Number. If X-Client-ID identifies a USER credential, add both target headers and include their exact trimmed values in the canonical header set before calculating X-Signature.

### Request body

| Field     | Required | Type   | Validation         |
| --------- | -------- | ------ | ------------------ |
| `case_id` | Yes      | string | Must be non-empty. |

### Success data

The current post-cancellation `med_case` detail projection.

### Behavior and validation

The Open API layer does not locally test `can_cancel`; the MED service decides whether the operation is allowed. Do not infer a time limit. The returned numeric status and `can_cancel` value are authoritative. No endpoint idempotency key exists.

### Errors

Every call can fail for missing or invalid signature headers, an expired timestamp, nonce replay, an invalid body hash or signature, insufficient permission, or a downstream service error. Endpoint-specific errors include:

* `4000` missing case ID.
* Common owner-scope, MED RPC, and mapped provider errors.

### Example request

```bash theme={null}
curl --request POST ${BASE_URL}/v3/med/cancel --header Content-Type:application/json --header X-Client-ID:${CLIENT_ID} --header X-Timestamp:${TIMESTAMP_MS} --header X-Nonce:${NONCE} --header X-Content-Hash:${CONTENT_HASH} --header X-Signature:${SIGNATURE} --data '{"case_id":"demo-med-case-001"}'
```

### Example response

```json theme={null}
{"code":200,"message":"success","data":{"med_case":{"case_id":"demo-med-case-001","status":7,"status_display":"Cancelled","can_cancel":false,"timeline":[],"infractions":[],"refunds":[]}},"time":1767225600000}
```