After creating the development components (DCs), you synchronize them with the version stored on the Design Time Repository (DTR).
1. Open the Package Explorer view.
2. From the context menu of your project, choose Development Component → Sync Used DCs.
A dialog Sync Used Development Components appears.
3. Select the library project DC and make sure that the Build DCs after sync indicator is selected.
4. Choose OK.
You have synchronized the required DCs.