> ## 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.

# E1001 — Invalid transaction signature

> Invalid transaction signature

# E1001 — Invalid transaction signature

| Property     | Value                     |
| ------------ | ------------------------- |
| **Code**     | `1001`                    |
| **Slug**     | `E1001`                   |
| **Category** | `validation` (Validation) |

## What happened

Invalid transaction signature.

## Why it happened

The transaction signature does not match the sender's public key. This usually means the transaction was signed with the wrong private key or the key has been rotated.

## How to fix

Re-sign the transaction with the account's current private key.

## Receipt example

```json theme={null}
{
  "code": 1001,
  "slug": "E1001",
  "category": "validation",
  "what": "Invalid transaction signature",
  "fix": "Re-sign the transaction with the account's current private key.",
  "docs_url": "https://docs.cowboy.inc/errors/E1001"
}
```

***

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