title: Http status code for updates with conditions
body: <p>Good morning:</p>
  
  <p>I have a resource from my api that updates a record of my database if a condition is met, when it is met and the record is updated I return a HTTP status code 200, but I do not know what Http status code return when the condition is not met, since it can not be a 400 error, because the request is well formed</p>
  
  <p>Thank you very much for the reply</p>