To open a business object definition that is stored in a local directory, do the following:
The Import dialog box opens. The dialog box defaults to filter files of type XML Schema Definition (with a .xsd extension). You can also select a different file type from the Files of type list, or you can select all file types.
If the Open the imported business objects check box is selected then Business Object Designer also opens the business object definition for editing. Otherwise, the business object definition is imported into the project but not opened for editing. For more information, see "Working with business object definitions".