---
title: "Validation errors"
description: "The 422 response shape for JSON clients and HTML posts."
---

> Documentation Index
> Fetch the complete documentation index at: https://docs.getquickforms.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Validation errors

JSON clients get the standard Laravel 422 shape: a summary message and an errors object keyed by field name.

```json title="422 Unprocessable Content"
{
  "message": "The email field must be a valid email address. (and 2 more errors)",
  "errors": {
    "email": ["The email field must be a valid email address."],
    "plan": ["The selected plan is invalid."],
    "seats": ["The seats field must be at least 1."]
  }
}
```

- Messages use the field label in lower case, or the field's custom message when it has one.
- Errors for list fields can be keyed by item, for example `topics.0`. The embed widget shows them on the parent field.
- HTML posts get the hosted error page with the same messages, a 422 status and a link back.
- Test submissions through the API and MCP are validated the same way and return the same errors.

Source: https://docs.getquickforms.com/validation/index.mdx