> ## 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.

# E1740 — CBSS: tlock target_height not beyond MIN_TLOCK_LEAD_BLOCKS

> CBSS: tlock target_height not beyond MIN_TLOCK_LEAD_BLOCKS

# E1740 — CBSS: tlock target\_height not beyond MIN\_TLOCK\_LEAD\_BLOCKS

| Property | Value |
| - | - |
| **Code** | `1740` |
| **Slug** | `E1740` |
| **Category** | `cbss` (CBSS) |
| **CIP** | CIP-24 §3.4.6 |

## What happened

Cbss: tlock target\_height not beyond MIN\_TLOCK\_LEAD\_BLOCKS.

This is the receipt's `what` text, produced by the node's `ExecutionError::TlockLeadTooShort`.

## Why it happened

The node rejected the operation with `E1740` (category `cbss`, CBSS). The receipt's `why` field carries the specific cause and `context` carries structured details, when the emitter attaches any.

The normative rule is in CIP-24 §3.4.6.

## How to fix

Choose a target\_height further in the future — it must exceed the current head by at least MIN\_TLOCK\_LEAD\_BLOCKS so the committee has an observe window.

## Receipt example

```json theme={null}
{
  "code": 1740,
  "slug": "E1740",
  "category": "cbss",
  "what": "cbss: tlock target_height not beyond MIN_TLOCK_LEAD_BLOCKS",
  "fix": "Choose a target_height further in the future — it must exceed the current head by at least MIN_TLOCK_LEAD_BLOCKS so the committee has an observe window.",
  "docs_url": "https://docs.cowboy.inc/errors/E1740"
}
```

***

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


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