# Create a Meter Event Adjustment

Creates a meter event adjustment to cancel a previously sent meter event.

## Request

```curl
curl -X POST https://api.stripe.com/v2/billing/meter_event_adjustments \
  -H "Authorization: Bearer <<YOUR_SECRET_KEY>>" \
  -H "Stripe-Version: 2026-06-24.dahlia" \
  --json '{
    "event_name": "ai_search_api",
    "type": "cancel",
    "cancel": {
        "identifier": "idmp_12345678"
    }
  }'
```

### Response

```json
{
  "object": "v2.billing.meter_event_adjustment",
  "id": "mtr_event_adj_12345678",
  "livemode": false,
  "created": "2024-06-01T12:00:00.000Z",
  "status": "pending",
  "event_name": "ai_search_api",
  "type": "cancel",
  "cancel": {
    "identifier": "idmp_12345678"
  }
}
```

## Parameters

- `cancel` (object, required)
  Specifies which event to cancel.

  - `cancel.identifier` (string, required)
    The identifier that was originally assigned to the meter event. You can only cancel events within 24 hours of Stripe receiving them.

- `event_name` (string, required)
  The name of the meter event. Corresponds with the `event_name` field on a meter.

- `type` (enum, required)
  Specifies the type of cancellation. Currently supports canceling a single event.
Possible enum values:
  - `cancel`
    Cancel a single meter event by identifier.

## Returns

Returns a [Meter Event Adjustment object](https://docs.stripe.com/api/v2/billing/meter-event-adjustments/object.md).

## Error Codes

| HTTP status code | Code | Description |
| --- | --- | --- |
| 400 | invalid_cancel_configuration | The adjustment configuration is invalid for the adjustment type. |