This error occurs when a For Loop configured for parallel execution contains a conditional terminal. The iterations execute out of order, so additional iterations execute before the stop condition is met.
To correct this error, remove the conditional terminal or disable parallelism on the For Loop. To disable parallelism on the For Loop, right-click the For Loop, select Configure Iteration Parallelism from the shortcut menu, and remove the checkmark from the Enable loop iteration parallelism checkbox in the For Loop Iteration Parallelism dialog box.