# `Oasis.BadRequestError.JSONSchemaValidationFailed`
[🔗](https://github.com/xinz/oasis/blob/main/lib/oasis.ex#L40)

Indicates that a request input failed JSON Schema validation.

This struct wraps the underlying `JSONSchex.Types.Error` so detailed
validation context is available to custom error handlers.

## Fields

- `:error` - the underlying `t:JSONSchex.Types.Error.t/0`.
- `:path` - a URI-fragment JSON Pointer addressing the offending value
  inside the request payload, e.g. `"#/name"`. Pointer segments use RFC
  6901 escaping (`~` → `~0`, `/` → `~1`) followed by URI percent-encoding.

Generated Oasis modules do not embed OpenAPI source metadata at runtime;
the route/parameter context that produced this error is already available
from `t:Plug.Conn.t/0` (`method`, `request_path`, `path_info`, headers) plus
the surrounding `Oasis.BadRequestError`'s `:use_in` and `:param_name`
fields. For generation-time source locations into the OpenAPI document,
see `Mix.Oasis.Router`'s `:source_meta` field.

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*Consult [api-reference.md](api-reference.md) for complete listing*