# Cannot modify subscription during consent review period

Occurs when an attempt to modify a subscription is made during a required consent review period.

---

## Example

```json
{
  "error": {
    "type": "request_error",
    "code": "subscription_locked_consent_review_period",
    "detail": "Subscriptions cannot be modified during the mandatory consent review period.",
    "documentation_url": "https://developer.paddle.com/errors/subscriptions/subscription_locked_consent_review_period"
  },
  "meta": {
    "request_id": "00000000-0000-0000-0000-000000000000"
  }
}
```

## Details

| Attribute | Value |
| --- | --- |
| Status code | 409 |
| Error code | `subscription_locked_consent_review_period` |
| Error message | Subscriptions cannot be modified during the mandatory consent review period. |

## Common causes

- You're trying to modify a subscription during a mandatory consent review period.
- The system locks subscriptions from changes during this period to ensure customers can review the subscription terms as they were presented.

## Common solutions

- Wait until after the subscription's `next_billed_at` before attempting to modify the subscription.
- If immediate changes are required, contact Paddle support for assistance.