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

# E1304 — Entitlement conflict

> Entitlement conflict

# E1304 — Entitlement conflict

| Property     | Value                       |
| ------------ | --------------------------- |
| **Code**     | `1304`                      |
| **Slug**     | `E1304`                     |
| **Category** | `entitlement` (Entitlement) |

## What happened

Entitlement conflict.

## Why it happened

An entitlement re-grant attempted to change immutable constraint fields.

## How to fix

Keep the entitlement's immutable constraint fields stable across re-grants.

## Receipt example

```json theme={null}
{
  "code": 1304,
  "slug": "E1304",
  "category": "entitlement",
  "what": "Entitlement conflict",
  "fix": "Keep the entitlement's immutable constraint fields stable across re-grants.",
  "docs_url": "https://docs.cowboy.inc/errors/E1304"
}
```

***

<Card title="All Error Codes" icon="list" href="/errors/overview">
  View the complete error code reference
</Card>