Yes. 4xx codes are client errors: The request contains a mistake or can't be fulfilled as sent.

4xx · Client error

HTTP 412 Precondition Failed

A condition in the request headers, like If-Match, wasn't met.

Example response

HTTP

HTTP/1.1 412 Precondition Failed
Content-Type: application/json; charset=utf-8

{ "error": "Precondition Failed" }

Look up the headers shown here in the HTTP headers reference.

What does HTTP 412 mean?: Precondition Failed. A condition in the request headers, like If-Match, wasn't met.
Is 412 an error?: Yes. 4xx codes are client errors: The request contains a mistake or can't be fulfilled as sent.