> ## 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.

# E1305 — Entitlement param invalid

> Entitlement param invalid

# E1305 — Entitlement param invalid

| Property | Value |
| - | - |
| **Code** | `1305` |
| **Slug** | `E1305` |
| **Category** | `entitlement` (Entitlement) |
| **CIP** | CIP-13 §11 |

## What happened

Entitlement param invalid: \{0}.

This is the receipt's `what` text, produced by the node's `ExecutionError::EntitlementParamInvalid`. Placeholders in braces are filled from the failing transaction.

## Why it happened

The node rejected the operation with `E1305` (category `entitlement`, Entitlement). The receipt's `why` field carries the specific cause and `context` carries structured details, such as the values that filled the placeholders above.

The normative rule is in CIP-13 §11.

## How to fix

Fix the entitlement parameter named in the error detail — it failed value, type, or presence validation (unknown param, missing required param, wrong type, or invalid value) against the entitlements schema.

## Receipt example

```json theme={null}
{
  "code": 1305,
  "slug": "E1305",
  "category": "entitlement",
  "what": "entitlement param invalid: {0}",
  "fix": "Fix the entitlement parameter named in the error detail — it failed value, type, or presence validation (unknown param, missing required param, wrong type, or invalid value) against the entitlements schema.",
  "docs_url": "https://docs.cowboy.inc/errors/E1305"
}
```

***

> [card] [All Error Codes](https://docs.cowboy.inc/errors/overview.md)
>
> View the complete error code reference


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