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

# Fail message

> Fail message

> [!WARNING]
>
> **Confirm your deployment before running this request.** This page describes an API contract;
> a published reference does not establish hosted availability. Check the dated
> [host report](/api-reference/hosts) and obtain your deployment URL and credentials.
> Replace the example host if your provisioned service uses a different URL.

### Path parameters

**id** `string` *required*

Message ID (UUID)

### Request body

`FailMessageRequest`

**error** `string` *required*

### Response

`MessageResponse`

**acknowledged\_at** `string,null`

**attempts** `integer (int32)` *required*

Minimum: `0`.

**conversation\_id** `string` *required*

**created\_at** `string` *required*

**error** `string,null`

**from\_agent\_id** `string` *required*

**id** `string` *required*

**max\_attempts** `integer (int32)` *required*

Minimum: `0`.

**message\_type** `string` *required*

**next\_retry\_at** `string,null`

**payload** `object` *required*

Additional keys map to values of type `string`.

**sequence\_number** `integer (int64)` *required*

Minimum: `0`.

**status** `string` *required*

**tenant\_id** `string` *required*

**to\_agent\_id** `string` *required*

### Status codes

| Code | Meaning |
| - | - |
| `200` | — |
| `404` | — |

### Using this contract

Read the [source OpenAPI document](/spec/stateset-icommerce.json) for declared schemas and alternatives.
This page also includes documented corrections from the [spec overlays](https://github.com/stateset/docs/tree/main/spec/overlays).
Example IDs and values are illustrative; replace them with records from your workspace.

```bash cURL theme={null}
curl --silent --show-error --fail-with-body --request POST \
  --url 'https://api.stateset.com/api/v1/a2a/messages/{id}/fail' \
  --header 'Authorization: Bearer YOUR_API_KEY' \
  --header 'Content-Type: application/json' \
  --data '{
  "error": "string"
}'
```

```json 200 theme={null}
{
  "acknowledged_at": "2026-08-31T14:22:05Z",
  "attempts": 1,
  "conversation_id": "3fa85f64-5717-4562-b3fc-2c963f66afa6",
  "created_at": "2026-08-31T14:22:05Z",
  "error": "string",
  "from_agent_id": "3fa85f64-5717-4562-b3fc-2c963f66afa6",
  "id": "3fa85f64-5717-4562-b3fc-2c963f66afa6",
  "max_attempts": 1,
  "message_type": "string",
  "next_retry_at": "2026-08-31T14:22:05Z",
  "payload": {},
  "sequence_number": 1001,
  "status": "pending",
  "tenant_id": "3fa85f64-5717-4562-b3fc-2c963f66afa6",
  "to_agent_id": "3fa85f64-5717-4562-b3fc-2c963f66afa6"
}
```


This documentation is built and hosted on [Mintlify](https://mintlify.com), a developer documentation platform.