Java Development Tools

Hello,

I have successfully created entities in my model using the 'new buisness components from tables' function. But now my database moddel has changed and I would like to synchronize my entities with database to get newest colums, but when right clicking an entity, the 'Synchronize with database' link is greyed and cannot be selected.

I have a database connection configured in my application resources and I can still import new tables in my project.

Do you have any idea of what is happening? This is not the case for all my applications. I can still synchronize in some other ones

Thank you for your help

Stephane