# E03xxx — Billing & plans

Error codes in the `E03xxx` range that the public Bird API returns. Each code links to its own page (the page its `doc_url` points at) with the cause and what to do. Retired codes stay listed; they are never renamed or reused.

| Code                                | Name                      | Status | Message                                        |
| ----------------------------------- | ------------------------- | ------ | ---------------------------------------------- |
| [`E03001`](/docs/api/errors/E03001) | `ProductNotFound`         | `404`  | The requested product was not found.           |
| [`E03003`](/docs/api/errors/E03003) | `RateCardNotFound`        | `404`  | The requested rate card was not found.         |
| [`E03004`](/docs/api/errors/E03004) | `RateCardVersionNotFound` | `404`  | The requested rate card version was not found. |
| [`E03007`](/docs/api/errors/E03007) | `PriceNotFound`           | `404`  | No price found for the given dimensions.       |

## Related

- [Errors](/docs/api/errors): the full wire contract, status mapping, and all code ranges
- [Error handling](/docs/guides/errors): branching on `type` and `code`, validation details, and `vendor_code`