user7881: I created transfer function with blockfrost.js and cardano-serialization-lib.
I refered following code.
https://github.com/blockfrost/blockfrost-js/tree/master/examples/simple-transaction
When I try to transfer with above code, I am getting following error.
"transaction submit error ShelleyTxValidationError ShelleyBasedEraBabbage (ApplyTxError [UtxowFailure (UtxoFailure (FromAlonzoUtxoFail (ValueNotConservedUTxO (Value 0 (fromList [])) (Value 2663366 (fromList []))))),UtxowFailure (UtxoFailure (FromAlonzoUtxoFail (BadInputsUTxO (fromList [TxIn (TxId {_unTxId = SafeHash \"***\"}) (TxIx 1)]))))])"

Interesting thing is, transaction is success also, I can see success transaction in cardano explorer.
Can I ignore above error? Or how can I fix above error?

user28: This probably means that you are trying to spend an UTxO that is already spent.
This can mean few things, but most probably that you are submitting the transaction for the second time.
If you are using Blockfrost, check the /mempool endpoint to see if you transaction is in the mempool or /txs if it is already on-chain.

7881: <p>I created transfer function with blockfrost.js and cardano-serialization-lib.</p>
<p>I refered following code.
<a href="https://github.com/blockfrost/blockfrost-js/tree/master/examples/simple-transaction" rel="nofollow noreferrer">https://github.com/blockfrost/blockfrost-js/tree/master/examples/simple-transaction</a></p>
<p>When I try to transfer with above code, I am getting following error.</p>
<pre><code>&quot;transaction submit error ShelleyTxValidationError ShelleyBasedEraBabbage (ApplyTxError [UtxowFailure (UtxoFailure (FromAlonzoUtxoFail (ValueNotConservedUTxO (Value 0 (fromList [])) (Value 2663366 (fromList []))))),UtxowFailure (UtxoFailure (FromAlonzoUtxoFail (BadInputsUTxO (fromList [TxIn (TxId {_unTxId = SafeHash \&quot;***\&quot;}) (TxIx 1)]))))])&quot;
</code></pre>
<p>Interesting thing is, transaction is success also, I can see success transaction in cardano explorer.</p>
<p>Can I ignore above error? Or how can I fix above error?</p>
 28: <p>This probably means that you are trying to spend an UTxO that is already spent.</p>
<p>This can mean few things, but most probably that you are submitting the transaction for the second time.</p>
<p>If you are using Blockfrost, check the <code>/mempool</code> endpoint to see if you transaction is in the mempool or <code>/txs</code> if it is already on-chain.</p>
