This task's dates are set to manual, but it can't begin on its current date because its prerequisites won't yet be completed.

To resolve this, do one of the following:

  1. set this task's dates to automatic,
  2. move the manual start date to %1@ which will allow this task to be scheduled when its prerequisites have been completed, or
  3. adjust the dependencies for the task to alleviate the problem and allow the task to remain manually started on %2@.