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

# pro_required

> Pro subscription required

|                    |                 |
| ------------------ | --------------- |
| **HTTP status**    | `403 Forbidden` |
| **Error code**     | `pro_required`  |
| **Resolve action** | `select_plan`   |

## What happened

The authenticated user does not have access to Particle API features. This endpoint requires an active Pro subscription.

## How to fix

<Steps>
  <Step title="List available plans">
    ```bash theme={"dark"}
    curl https://api.particle.pro/v1/billing/plans \
      -H "Authorization: Bearer YOUR_JWT_TOKEN"
    ```
  </Step>

  <Step title="Select a Pro plan">
    ```bash theme={"dark"}
    curl -X POST https://api.particle.pro/v1/organizations/{orgId}/billing/subscription \
      -H "Authorization: Bearer YOUR_JWT_TOKEN" \
      -H "Content-Type: application/json" \
      -d '{"plan_id": "PLAN_ID"}'
    ```
  </Step>
</Steps>

Requires the **OWNER** role on the organization.