Specifies relevant sources of the error, if any.
| Name | Type | Description | Notes |
|---|---|---|---|
| parameter | String | The relevant URI query parameter causing the error | [optional] |
| field | String | The request body field that led to the error | [optional] |
| header | String | The header field that contributed to the error | [optional] |
| reference | String | A resource ID or path linked to the error | [optional] |