E2553

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