When you are developing JPA applications, you must set up the facet.

To set up the facet:

1. In the Project Explorer view, choose the dynamic Web project or EJB project using JPA.
2. From the Eclipse menu bar, choose Project - Property.
   The Property: Project-name dialog box appears.
   
3. In the left pane of the Property: Project-name dialog box, choose Project Facets.
   The Project Facets page appears.
   

   

4. In the Project Facets page, check JPA, and then specify 2.0 as the version.
   On the Project Facets page, Further configuration required or Further configuration available is displayed.
   

   

5. Click the link displayed in step 4.
   The Modify Faceted Project dialog box appears.
   

   

6. In the Modify Faceted Project dialog box, enter the following items.
   
   • Specify Generic 1.0 in Platform.
   • Specify Disable Library Configuration in Type of JPA implementation.
7. Click the OK button.
8. In the Property: Project-name dialog box, click the OK button.