> ## 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.

# E1002 — Nonce mismatch

> Nonce mismatch

# E1002 — Nonce mismatch

| Property     | Value                     |
| ------------ | ------------------------- |
| **Code**     | `1002`                    |
| **Slug**     | `E1002`                   |
| **Category** | `validation` (Validation) |

## What happened

Nonce mismatch.

## Why it happened

The transaction nonce does not match the expected value for the sender account. Each account's nonce increments by 1 after every committed transaction.

## How to fix

Fetch the account's current nonce via the RPC and retry with that value.

## Receipt example

```json theme={null}
{
  "code": 1002,
  "slug": "E1002",
  "category": "validation",
  "what": "Nonce mismatch",
  "fix": "Fetch the account's current nonce via the RPC and retry with that value.",
  "docs_url": "https://docs.cowboy.inc/errors/E1002"
}
```

***

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