---
title: "E26003 — EsimIncompatiblePackageClass"
description: "This eSIM cannot combine reduced-speed and full-speed data packages."
canonical: "https://bird.com/docs/api/errors/E26003"
---

# E26003 — EsimIncompatiblePackageClass

This eSIM cannot combine reduced-speed and full-speed data packages.

- **HTTP status**: `409`
- **Type**: `conflict_error`
- **Name**: `EsimIncompatiblePackageClass`

## What to do

Choose an offer of the same speed class as the packages the eSIM already holds; each package carries its speed class.

## Related

- [Idempotency](/docs/api/idempotency): safe retries and key reuse rules
- [E26xxx — eSIM](/docs/api/errors/E26xxx): every code in this range
- [Errors](/docs/api/errors): the full wire contract, status mapping, and error catalog
- [Error handling](/docs/guides/errors): branching on `type` and `code`, validation details, and `vendor_code`

## Related resources

- [Should I use a Bird SDK or call the API directly?](/explained/platform/should-i-use-an-sdk-or-call-the-api-directly) (answer)
- [Build your first integration](/learn/paths/integration) (course)
- [Send your first email](/docs/get-started/send-your-first-email) (docs)

[Get an implementation brief](/learn/workspace?topic=api-basics)