COBCH1669 Cannot construct an instance of abstract class <class-name>

An attempt has been made to instantiate an abstract class.
You cannot instantiate a class that has been specified with the ABSTRACT keyword.
class-id myClass1.
method-id main static.
  declare obj1 as object = new myClass2
end method.
end class.
class-id myClass2 abstract.  *> cannot instantiate this class
...
end class.