> ## 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.

# promo_code_not_valid_for_plan

> The promo code is restricted to specific plans

|                 |                                 |
| --------------- | ------------------------------- |
| **HTTP status** | `400 Bad Request`               |
| **Error code**  | `promo_code_not_valid_for_plan` |

## What happened

This promo code is restricted to specific billing plans, and the plan you selected (or your organization's current plan) isn't one of them. The error detail names the eligible plans.

## How to fix

<Steps>
  <Step title="Retry with an eligible plan or without the code">
    The request succeeds without the `promo_code` field; only the discount is affected. Surface the eligible plans from the error detail to the user.
  </Step>
</Steps>