E2553 Class type constraint cannot be specified more than once (Delphi)

Go Up to Error and Warning Messages (Delphi)

This occurs when trying to specify the type constraint for the generic type more than once.

program E2553;

{$APPTYPE CONSOLE}

uses
  SysUtils;

type
  TBaseClass = class
  end;

  TNewClass = class(TBaseClass)
  end;

  TTestClass<TC: TBaseClass, TNewClass> = class //E2553

  end;
begin