# INVALID_REQUEST

> 400: a parameter is missing or malformed.

A query or path parameter did not pass validation. The `errors` member lists each one:

```json
"errors": [{ "detail": "Invalid option: expected one of \"in_progress\"|…", "parameter": "status" }]
```

## How to fix it

Check the parameter against the [reference](/developers/reference). Enum values are lower case (`in_progress`, not
`In Progress`). `limit` is a whole number from 1; values above 200 are lowered to 200. Flags such as `anime` take
`true` or `false`.