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truffle.js

module.exports = {
  networks: {
    development: {
      host: "127.0.0.1",
      port: 8540,
      network_id: "*",
      gas: 4600000,
gasPrice: 4000000   // Match any network id
    }
  }
};

< "code": -32010, < "message": "Transaction gas price is too low. There is another transaction with same nonce in the queue. Try increasing the gas price or incrementing the nonce." < }, < "id": 6 < }

I am using parity.

How would I know what gas price should be used, or how is the nonce changed?

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Your problem is not really the gas price but the nonce of the transaction.

It is saying that there is already a transaction waiting to be mined with the exact same nonce. You must increase the nonce of your transaction. I recommand you to read the yellow paper

The gas price message is just saying that it cannot accept this transaction because it should have a superior gas price than the other one to be considered as the correct one.

  • How can I change the nounce? I just use truffle migrate. Is there an option for nouce? – Trevor Oakley May 31 '18 at 6:32
  • Can I delete the pending txns? – Trevor Oakley May 31 '18 at 6:32
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Use --no-persistent-txqueue in the start of the node to remove the old txn.

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