# unknown_field

**HTTP status:** 400 (Bad request)

**Title:** Unknown field

## Cause

The body has a field the route does not document. `param` names the first one, and the detail lists up to ten. Remove it and send the request again. Free-form maps such as `metadata` accept any key.

## How to fix it

Remove the field named in `param` from the body, or check its spelling against the API reference, then send the request again.

Remove the parameter named below and send the request again.

Every error carries `requestId` and the `Request-Id` header. Send it when you write to support.

[All error codes](/errors)