Error 19. COM method/function <function name> call failed. <More info>

An OLE exception occurred during OLE/COM method/function/property call. <More info> may contain
OLE exception description.

Commonly this is displayed when arguments passed to the OLE/COM method are incorrect or missing.

AB=CreateObject("Broker.Application");
AB.Import(); // <-- fails with error 19. In this case because of missing arguments