It means that it is set to update manually. The Design Accelerator
generators can have conflicts with the assembly constraint solver, so the
default setting for the DAcc solver is Manual.
To run the DAcc solver, RMB on the component and select Component>Manual
Solve from the context menu.
You can also select Automatic Solve, but their can be conflicts with the
assembly constraint solver in certain circumstances.
Loren Jahraus
Autodesk Inventor QA