---
title: "Invalid input"
description: "Auto read the request, but something in it doesn't fit what's needed. The errors list points at each field that's wrong and says why."
url: "https://on.auto/problems/invalid_input"
last_updated: "2026-11-10T14:41:54+00:00"
---

# Invalid input

## What it means

Auto read the request, but something in it doesn't fit what's needed. The `errors` list points at each field that's wrong and says why. You can fix the input and send it again.

## What to do

Read the problem's `detail` first. It says what happened to this request.

*   Fix each field the `errors` list names, then send the request again.
*   Each entry of `errors` has a `pointer` to its field, such as `/input/month`, and a `detail` sentence about it. An app can show each sentence next to its field.
*   When the `kind` is `input_schema`, the input schema of the function or workflow refused the input before the run started. Check the input against that schema.
*   Inside a workflow, this error has status 400 and the type `validation`, so a `catch` for it matches 400 or `validation`, never 422.

## Technical details

*   Type: `https://on.auto/problems/invalid_input`
*   Status: 422
*   Reason: `invalid_input`
*   `errors`: each field that's wrong, with its `pointer` and a `detail` sentence
*   `kind`: `input_schema` when the input schema of a function or workflow refused the input

[Responses and errors](https://on.auto/docs/reference/http#responses-and-errors) in the HTTP API reference has the full detail. [Problem types](https://on.auto/problems/) lists every type.

## Sitemap

See the [full documentation and product sitemap](https://on.auto/sitemap.md) for related pages.