CHAIN_NONCE_TOO_LOW

Nonce already used

What happened

The nonce on the outgoing transaction is lower than the account's on-chain nonce. Usually means a previous tx with the same nonce already confirmed.

How to fix

Refetch the nonce via eth_getTransactionCount and retry. Most wallets do this automatically; if you're managing nonces yourself, sync after every send.

Example

import { createClient } from "viem";
const nonce = await client.getTransactionCount({ address });

Reference

• Namespace: CHAIN
• Help URL: https://0gkit.com/errors/CHAIN_NONCE_TOO_LOW
• See also: all error codes