# Transaction Failed

The `transaction_failed` error returns a [`400` error code](https://developer.mozilla.org/en-US/docs/Web/HTTP/Status/400) and occurs when a client submits a transaction that was well-formed but was not included in the ledger due to some other failure.

For example, a transaction may fail if: 

1. The source account for a transaction cannot pay the minimum fee. 
2. The sequence number is incorrect. 
3. One of the contained operations has failed, such as a payment operation that overdraws on the paying account.

In almost every case, this error indicates that the transaction submitted in the initial request will never succeed. There is one exception: a transaction that fails with the `tx_bad_seq` result code (as expressed in the `result_code` field of the error) may become valid in the future if the sequence number it used was too high.

```bash
{
  "type": "https://expansion-testnet.bantu.network/horizon-errors/transaction_failed",
  "title": "Transaction Failed",
  "status": 400,
  "detail": "The transaction failed when submitted to the stellar network. The `extras.result_codes` field on this response contains further details.  Descriptions of each code can be found at: https://www.stellar.org/developers/guides/concepts/list-of-operations.html",
  "extras": {
    "envelope_xdr": "AAAAAgAAAADdfhHDs4Vaug6p8Oxb1QRjNRdJt3pYKKBVhFHrEgd9QAAAAAoAEi4YAAAAAwAAAAEAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAEAAAAAAAAACwAAAAAAAAAAAAAAAAAAAAESB31AAAAAQFhc/liVXbLk3NtB2BtweFJ064JdDIfrTSrqKMhb1oIRK+0PSyvjzZTkRCJmQY3bHNXYNuepa2TF7aBdibrb1gI=",
    "result_codes": {
      "transaction": "tx_insufficient_fee"
    },
    "result_xdr": "AAAAAAAAAAr////3AAAAAA=="
  }
}
```