# VALIDATION_FAILED — 422 Unprocessable Entity

# 422 Unprocessable Entity

The request was well-formed but semantically invalid. Check the `errors` array for field-level details.

## Category

`validation`

## Retryable?

**No.** Fix the validation errors and retry.

## Example

```json
{
  "type": "https://developer.gett-tech.com/errors/VALIDATION_FAILED",
  "title": "Unprocessable Entity",
  "status": 422,
  "detail": "Validation failed.",
  "instance": "/v1/marketfront/orders/validate",
  "requestId": "req_abc123",
  "timestamp": "2026-03-11T14:30:00.000Z",
  "errorCode": "VALIDATION_FAILED",
  "errorCategory": "validation",
  "retryable": false,
  "errors": [
    {
      "code": "MODIFIER_REQUIRED",
      "message": "Required modifier group 'Size' has no selection.",
      "itemId": "item_xyz"
    }
  ]
}
```