The first step is to modify the component settings of the source component. Before changing the component settings, make sure to save your mapping with a new name in the BasicTutorials folder.
To instruct MapForce to process multiple XML instance files, double-click the component's header and type BookTitle*.xml in the Input XML File field (screenshot below). The asterisk ( * ) in the file name instructs MapForce to use all the files with the BookTitle prefix as mapping inputs. Because the path is relative, MapForce will look for all BookTitle files in the same directory as the mapping file. You can also enter an absolute path if necessary.