You can force a transition to execute only when the preceding step is in one of the valid states and in AUTO mode. In parallel branches, all preceding steps must be in one of the valid states and in AUTO mode.
A valid state is any of the following: Running, Holding, Aborting, Aborted, Stopping, Stopped, Aborted_NC, Stopped_NC, Held_NC, Complete or Active is also allowed.
A non-valid state is any of the following: Acquiring or Selecting.
The person forcing the transition must have the Batch_Active_Step_Change Key.
To force the transition, right-click the transition in the PFC View (or the Transition Expression dialog), and then select Force Transition from the context menu.