There was a request to include the ability to turn off the error messages returned to the client when a bad request was made. For example, if you had a typo in your table, in the request URL, you would get a message that says "Entity does not exist". Or, if you passed in a String instead of a number, you'd get a message about expecting a Decimal but got String.

The client would like to hide these details so that a generic error message is returned.