# Response

When an error occurs, Horizon responds with a JSON document with the below attributes.

 \- ATTRIBUTE - 

* type `URL`

  The type of Status Code returned.
* title `string`

  A short title describing the Status Code, which can be used to lookup more information about an error.
* status `number`

  A short title describing the Status Code, which can be used to lookup more information about an error.
* detail `string`

  A short title describing the Status Code, which can be used to lookup more information about an error.
* extras `array`

  If the Status Code is `Transaction Failed`, this extras field displays the Result Code returned by Stellar Core describing why the transaction failed. Hide child attributes

  * envelope\_xdr `string`

    A base64-encoded representation of the TransactionEnvelope XDR whose failure triggered this response.
  * result\_xdr `string`

    A base64-encoded representation of the TransactionResult XDR returned by stellar-core when submitting this transaction.
  * result\_codes.transaction `string`

    The transaction Result Code returned by Stellar Core, which can be used to lookup more information about an error in the docs.
  * result\_codes.operations `array`

    An array of operation Result Codes returned by Stellar Core, which can be used to lookup more information about an error in the docs.

```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/learn/concepts/list-of-operations.html",
  "extras": {
    "envelope_xdr": "AAAAANPRjCD1iCti3hovsrrz6aSAjmp263grVr6+mI3SQSkcAAAAZAAPRLgAAAADAAAAAAAAAAAAAAABAAAAAQAAAACuSL9OciKkFztj4d3zuadl20HHObu+7qJenBxHPrMayQAAAAUAAAABAAAAANPRjCD1iCti3hovsrrz6aSAjmp263grVr6+mI3SQSkcAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAtJBKRwAAABA1N0iqDAgqS6+3RIZGoNB9OXrY3wd/nLruXYi+eiTt4jn94fLVLwAw6jJCaK+qxStwO7c4kP6u5k0RPbuYC55CT6zGskAAABAiUGCNCS4pGlfcRmi82kbralzcFlTQAFzLyfUrYGn3RtQ4p/7TUwAqIanVoWGfEqzIJo64ZT+mYtJ72BfI+FiDg==",
    "result_codes": {
      "transaction": "tx_failed",
      "operations": ["op_no_source_account"]
    },
    "result_xdr": "AAAAAAAAAGT/////AAAAAf////4AAAAA"
  }
}
```


---

# Agent Instructions: Querying This Documentation

If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter:

```
GET https://developers.docs.bantufoundation.org/api/errors/response.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.